JP2016193892A - Gel composition and sheet, and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gel composition having improved elasticity and strength.SOLUTION: A gel composition comprises a galactose portion-decomposed product of galactoxyloglucan, a compound that is a mixture of one or more kinds selected from magnesium salt, calcium salt, aluminum salt and sodium salt, and aqueous solvent.SELECTED DRAWING: None

Description

  The present invention relates to gel compositions and sheets, and methods for producing them.

  Conventionally, galactoxyloglucan has been used as a natural polysaccharide. Galactoxyloglucan has glucose, xylose and galactose as constituent sugars, glucose is β-1,4 bonded to the main chain, xylose is bonded to the side chain, and galactose is further bonded to the xylose. Galactoxyloglucan does not normally gel itself.

  On the other hand, LM pectin is also used as a natural polysaccharide, but in a solution in which LM pectin is dissolved in water, when calcium ions are added, the carboxy group is cross-linked and the LM pectin gels.

  On the other hand, since galactoxyloglucan is a neutral polysaccharide, it does not gel even when ions such as calcium are added.

On the other hand, galactose of galactoxyloglucan obtained by removing galactose, which constitutes part of the side chain of galactoxyloglucan, by partially degrading (partially degrading) using purified β-galactosidase derived from microorganisms. Partially decomposed products (hereinafter, simply referred to as “galactose partial decomposed products or partially decomposed products”) have been proposed (see Patent Documents 1 and 2). In such a galactose partial degradation product, the thermal behavior of the mixture when the galactose partial degradation product and an aqueous solvent are mixed is opposite to the thermal behavior of the galactoxyloglucan. It becomes sol when cooled, and exhibits a thermal behavior that the change in sol / gel is reversible. Such thermal behavior is called reversible thermal gelation properties.
In addition, since the galactose partial degradation product is derived from natural polysaccharides and is not chemically modified (added), it is safe for the human body and the environment. Therefore, the gel composition produced using the galactose partial degradation product is It can be widely used in foods, cosmetics, pharmaceutical preparations and the like.
As a method for producing a gel composition containing a galactose partial decomposition product of this type, a cooled aqueous solvent and a galactose partial decomposition product are mixed to dissolve the galactose partial decomposition product in an aqueous solvent, and the solution is heated to gel. It has been proposed that a film composition can be produced by producing a gel composition by proceeding to drying, and further drying the produced gel (see Patent Documents 1 and 2).

JP-A-8-283305 International Publication No. WO 97/29777

  However, the gel compositions described in Patent Documents 1 and 2 are unlikely to have sufficient elasticity and strength.

  Although it is conceivable to dry these gel compositions to produce sheets with reduced moisture content, when these gel compositions are dried, only sheets that are not particularly flexible and strong can be obtained.

  On the other hand, in general, in order to easily produce a gel composition containing a polysaccharide, it is desirable to mix the aqueous solvent and the polysaccharide so that no lumps are formed when the aqueous solvent and the polysaccharide are brought into contact with each other. It is said that. When lumps are formed, powdered solids (non-hydrates) resulting from non-hydrated polysaccharides remain in the resulting gel composition, resulting in reduced quality. is there. In addition, it takes a lot of time and labor to completely hydrate and dissolve the polysaccharide once it has become damped.

In this regard, in the methods of Patent Documents 1 and 2, when producing a gel composition using a galactose partial decomposition product, the galactose partial decomposition product is mixed with a galactose partial decomposition product using a cooled aqueous solvent, This is dissolved.
However, in these methods, it is necessary to continuously cool the aqueous solvent and mix the galactose partial decomposition product with it, which requires preparation time and labor.
In these methods, the viscosity of the mixture becomes too high, and it may be difficult to handle when it is transferred to a desired container and gelled by heating. In addition, it is difficult to sufficiently fill a desired container, or bubbles are likely to be mixed during solution preparation or filling.
Thus, it is difficult to say that the methods of Patent Documents 1 and 2 can easily produce a gelled composition.

  Moreover, even if the gel composition obtained by the method of patent documents 1 and 2 is dried, as described above, only a sheet having particularly poor flexibility and strength can be obtained.

  In view of the above circumstances, the present invention provides a gel composition having superior elasticity and strength, a sheet having excellent flexibility and strength, a method for producing a gel composition that can be easily produced, and a method for producing a sheet. The task is to do.

In order to solve the above-mentioned problems, the present inventors conducted intensive research and obtained the following knowledge.
That is, as described above, when a galactose partial decomposition product was dissolved in water alone to form a gel composition, it was found that such a gel composition was not sufficient in strength such as elasticity and tensile resistance. .

  It has also been found that when such a gel composition is dried to produce a sheet, the strength such as flexibility and tensile resistance is not sufficient.

  Based on these findings, the present inventors conducted further diligent research and found that a gel composition was prepared by using a specific compound in combination with a partially decomposed product of galactose. And it discovered that the gel composition excellent in intensity | strength was obtained, and came to complete the gel composition of this invention.

On the other hand, when the present inventors diligently studied about the description content of patent documents 1 and 2 about the manufacturing method of a gel composition, the following knowledge was acquired.
That is, it is generally known that when a polysaccharide is mixed with an aqueous solvent, the polysaccharide is first hydrated and swollen by water in the aqueous solvent, and is further dissolved as the hydration swelling further proceeds. It has been.
As a result of considering this and the methods of Patent Documents 1 and 2, in the methods of Patent Documents 1 and 2, a galactose partial decomposition product is mixed and dissolved in a cooled aqueous solvent. The viscosity of the resin becomes relatively high, resulting in difficulty in handling.
In addition, as the aqueous solvent is cooled and the temperature is lowered, the time required for the partially decomposed galactose product to be in a hydrated and swollen state, and further, the time until the hydrated and swollen state is dissolved. Therefore, in the method of Patent Document 1, viscosity is developed at an early stage, and relatively strong forced stirring is required in order to uniformly diffuse the galactose partial decomposition product in the aqueous solvent.
Based on these findings, the present inventors have further conducted intensive research. As a result, one or more selected from an aqueous solvent, a partially decomposed galactose, a magnesium salt, a calcium salt, an aluminum salt, and a sodium salt are used. It was found that by mixing the compound, which is a mixture of the above, at room temperature, the galactose partial decomposition product can be dispersed in an aqueous solvent without causing lumps in the mixture while dissolving the compound.
In addition, this mixing at room temperature makes it easy to make the galactose partial decomposition product hardly dissolved in an aqueous solvent, and as a result, the viscosity of the mixture can be lowered. Next, by cooling or freezing the mixture having such a low viscosity, the galactose partial decomposition product is easily made into a high-viscosity hydrated swollen state in an aqueous solvent instead of being dissolved, and as a result, the viscosity of the mixture is reduced. It can be expensive.
In addition, since it is not necessary to cool the aqueous solvent in advance, the preparation time and labor can be saved accordingly.
And even if it heats the mixture in the state which many galactose partial decomposition products are hydrated and swollen, this mixture can be gelatinized and it discovers that a gel composition is obtained, Furthermore, galactose partial decomposition products and In the case where the specific compound is used in combination, it has been found that a gel composition can be obtained in the same manner, and the method for producing the gel composition of the present invention has been completed.

  Furthermore, it is clear that the sheet obtained by drying the gel composition is superior in flexibility and strength to the sheet obtained by drying the gel composition described in Patent Documents 1 and 2. It was. Thus, it has been found that such an excellent sheet can be obtained only by drying the gel composition, and the sheet of the present invention and the production method thereof have been completed.

  That is, the gel composition according to the present invention includes a galactose partial decomposition product of galactoxyloglucan, a compound that is one or a mixture of two or more selected from magnesium salts, calcium salts, aluminum salts, and sodium salts, and an aqueous solution. Containing a solvent.

  According to this structure, it is excellent in a softness | flexibility and intensity | strength by containing the said galactose partial decomposition product, the said compound, and an aqueous solvent rather than the case where this compound is not contained.

Moreover, in the gel composition of the said structure,
The compound is preferably a mixture of two or more selected from the magnesium salt, the calcium salt, the aluminum salt, and the sodium salt.

Moreover, in the gel composition of the said structure,
The compound is preferably one or a mixture of two or more selected from the magnesium salt, the calcium salt, and the aluminum salt.

Moreover, in the gel composition of the said structure,
The partial decomposition product of galactose is preferably formed by partial decomposition of galactose by 30 to 55%.

  According to such a configuration, 30% to 55% of galactose is removed, whereby elasticity and strength can be more fully exhibited.

Moreover, in the gel composition of the said structure,
It is preferable that content of the said galactose partial decomposition product is 1-5 mass% with respect to the whole quantity of the said gel composition.

  According to this structure, elasticity and intensity | strength can fully be exhibited because content of the partial decomposition product of galactose is 1-5 mass% with respect to the whole quantity of a gel composition.

Moreover, in the gel composition of the said structure,
It is preferable that content of the said compound is 0.1-12 mass% with respect to the whole quantity of the said gel composition.

  According to this structure, elasticity and intensity | strength can be more fully exhibited because content of this compound is 0.1-12 mass% with respect to the whole quantity of a gel composition.

In addition, the gel composition having the above-described configuration is
It is preferably for a face pack.

  According to such a configuration, since the gel composition is for a face pack, the gel composition has more adhesiveness due to moisture contained in the gel structure while holding the active ingredient inside the gel structure. Useful.

The sheet of the present invention is
A galactose partial decomposition product of galactoxyloglucan, an inorganic compound that is one or a mixture of two or more selected from a magnesium salt, a calcium salt, and an aluminum salt, and an aqueous solvent are contained.

  According to such a configuration, the sheet containing the galactose partial decomposition product, the inorganic compound, and the aqueous solvent is superior to conventional sheets in flexibility and strength.

In the seat with the above configuration,
The inorganic compound may further contain a sodium salt or a potassium salt.

In the seat with the above configuration,
It is preferable that the moisture content of the sheet is 10 to 35 mass% with respect to the total amount of the sheet.

  Here, the moisture content of the sheet means the sheet after drying from the mass of the sheet before drying when the sheet is dried under reduced pressure at -0.1 MPa (atmospheric pressure) at 70 ° C. for 8 to 12 hours. It means the ratio (percentage) of the decrease in mass to the sheet mass before drying.

In the sheet having the above configuration,
It is preferable that content of the said galactose partial decomposition product is 15-80 mass% with respect to the whole quantity of the said sheet | seat.

According to such a configuration, the content of the partially decomposed galactose is 15 to 80% by mass with respect to the total amount of the sheet, whereby flexibility and strength can be more sufficiently exhibited.

In the sheet having the above configuration,
It is preferable that content of the said inorganic compound is 10-70 mass% with respect to the whole quantity of the said sheet | seat.

  According to this configuration, the content of the inorganic compound is 10 to 70% by mass with respect to the total amount of the sheet, whereby flexibility and strength can be more sufficiently exhibited.

In addition, the method for producing a gel composition according to the present invention includes:
A method for producing a gel composition comprising the following steps (1) to (3):
(1) A galactose partial decomposition product of galactoxyloglucan, a compound which is one or a mixture selected from magnesium salt, calcium salt, aluminum salt and sodium salt, and an aqueous solvent are mixed at room temperature. Obtaining a mixture;
(2) cooling or freezing the mixture obtained in step (1);
(3) The mixture cooled or frozen in step (2) is gelled by heating to obtain a gel composition containing the galactose partial decomposition product, the compound, and the aqueous solvent.

Here, “room temperature” means a temperature within a temperature range of 15 to 35 ° C. Further, “mixing at room temperature” means mixing at a temperature of the aqueous solvent at room temperature.
“Cooling” means a state in which the mixture of an aqueous solvent and a partial decomposition product of galactose is not in a solid state by lowering its temperature. This includes the state where both cases are mixed.
“Frozen” means that the mixture of the aqueous solvent and the partial decomposition product of galactose is solidified by lowering its temperature.

According to such a configuration, in the step (1), by mixing the galactose partial decomposition product of galactoxyloglucan and an aqueous solvent at room temperature, the above compound is dissolved in the aqueous solvent, and lumps are generated in the mixture. It is possible to disperse the galactose partial decomposition product in an aqueous solvent without the use of such a solvent.
In step (2), the galactose partial decomposition product can be hydrated and swollen in an aqueous solvent by cooling or freezing the mixture obtained in step (1). At this time, it becomes easy to make the galactose partial decomposed product not in a dissolved state but in a hydrated and swollen state. Thereby, the viscosity of a mixture (dispersion) can be made low, and a mixture can be made into a highly viscous hydrated swelling by cooling or freezing.
Furthermore, since the onset of viscosity can be relatively delayed, the galactose partial degradation product can be sufficiently dispersed in an aqueous solvent without the need for relatively strong forced stirring as in the prior art.
Furthermore, according to the steps (1) and (2), it is not necessary to cool the aqueous solvent in advance, and accordingly, preparation time and labor can be saved.
And in a process (3), a mixture can be gelatinized by heating and gelatinizing the mixture cooled or frozen by the process (2). At this time, in the obtained gel composition, mixing of non-hydrates such as lumps caused by the galactose partial decomposition product is suppressed.
Therefore, by providing the steps (1) to (3), a gel composition containing the galactose partial decomposition product, the above compound and an aqueous solvent can be easily produced.

“Dispersed” means that each galactose part is in a state in which an aqueous solvent penetrates into each powdered galactose partial decomposed product, but a highly viscous (adhesive) layer is hardly formed on the surface layer. It means a state in which a decomposition product is present in an aqueous solvent.
“Hydration swell” means a state in which each powdered galactose partial decomposition product sufficiently absorbs an aqueous solvent and each galactose partial decomposition product forms a high-viscosity state as a whole.
“Dissolved” means a state in which a polysaccharide molecular chain dissociates from a highly viscous surface layer and diffuses from the surface layer into a solvent.
In addition, “dama” is a state in which powdered galactose partial decomposition products are in an aggregated state (aggregate state) and contact with water, and only the outer layer of the aggregate contains water and an air layer inside the aggregate. By this contact, it becomes a highly viscous state, which makes it difficult for the aqueous solvent to penetrate into the inside of the aggregate, and it means a state in which the whole becomes a lump or a state where the lump is further aggregated.

In the method for producing a gel composition having the above structure,
In the step (1), the galactose partial decomposition product, the compound, and the aqueous solvent are preferably mixed at 18 to 30 ° C.

According to such a configuration, the galactose partial decomposition product, the above compound, and the aqueous solvent are mixed at 18 to 30 ° C., thereby avoiding the formation of lumps, and in a normal room temperature environment, the galactose moiety in the aqueous solvent. The decomposition product can be dispersed. In addition, the compound can be easily dissolved in an aqueous solvent.
Accordingly, it is possible to further suppress the deterioration of workability.

In the method for producing a gel composition having the above structure,
In the step (1), it is preferable that the galactose partial decomposition product and the aqueous solvent are mixed and then further mixed with the compound.

  According to this configuration, after the galactose partial decomposition product and the aqueous solvent are mixed, the above compound can be mixed in a state where the galactose partial decomposition product is sufficiently dispersed by further mixing with the above compound. Partially decomposed products can be mixed more uniformly, and this makes it easy to exhibit the elasticity and strength of the obtained gel composition.

The method for producing the sheet of the present invention comprises:
The following steps (1) to (4) are provided.
(1) A galactose partial decomposition product of galactoxyloglucan, an inorganic compound that is one or more selected from a magnesium salt, a calcium salt and an aluminum salt, and an aqueous solvent are mixed at room temperature to obtain a mixture. Obtaining a step;
(2) cooling or freezing the mixture obtained in step (1);
(3) A step of obtaining a gel composition containing the galactose partial decomposition product, the inorganic compound, and the aqueous solvent by gelling by heating the mixture cooled or frozen in step (2);
(4) A step of drying the gel composition obtained in step (3) to produce a sheet.

According to this structure, as above-mentioned, the gel composition containing a galactose partial decomposition product, an inorganic compound, and an aqueous solvent can be easily manufactured by steps (1) to (3).
Moreover, a sheet | seat can be produced only by drying the gel composition obtained at the process (3) at the process (4).
Therefore, it is simple.

  In addition, the manufacturing method of the sheet | seat of this invention is sodium among the compounds which are 1 type, or 2 or more types of mixtures selected from magnesium salt, calcium salt, aluminum salt, and sodium salt by the manufacturing method of the said gel composition. Steps (1) to (3) are performed using an inorganic compound excluding salt to produce a gel composition, and then the step (4) is performed on the obtained gel composition to produce a sheet. Is included.

In the manufacturing method of the sheet having the above configuration,
The inorganic compound may further contain a sodium salt or a potassium salt.

In the manufacturing method of the sheet having the above configuration,
In the step (1), it is preferable to mix the galactose partial decomposition product, the inorganic compound, and the aqueous solvent at 18 to 30 ° C.

  According to such a configuration, as described above, it is possible to further suppress workability deterioration.

In the manufacturing method of the sheet having the above configuration,
In the step (1), it is preferable that the galactose partial decomposition product and the aqueous solvent are mixed and then further mixed with the inorganic compound.

  According to this structure, as above-mentioned, a galactose partial decomposition product can be mixed more uniformly, and this can make it easy to exhibit the softness | flexibility and intensity | strength of the obtained sheet | seat.

  As described above, according to the present invention, there are provided a gel composition superior in elasticity and strength, a sheet superior in flexibility and strength, a method for producing a gel composition that can be easily produced, and a method for producing a sheet. Provided.

  Below, embodiment of the gel composition of this invention, a sheet | seat, and those manufacturing methods is described.

  The gel composition of the present embodiment includes a galactose partial decomposition product of galactoxyloglucan, a compound that is one or a mixture of two or more selected from magnesium salts, calcium salts, aluminum salts, and sodium salts, an aqueous solvent, Containing.

  The galactose partial decomposition product of galactoxyloglucan means a substance obtained by partial decomposition of the side chain galactose of galactoxyloglucan and is hereinafter sometimes abbreviated as a galactose partial decomposition product. Moreover, galactoxyloglucan means galactoxyloglucan (complete galactoxyloglucan) from which side chain galactose has not been removed by partial degradation by enzyme treatment described later. Such complete galactoxyloglucan may also be referred to as native galactoxyloglucan.

  Galactoxyloglucan is a constituent of the cell wall (primary wall) of higher plants such as dicotyledonous and monocotyledonous plants, and also exists as a storage polysaccharide for some plant seeds. Galactoxyloglucan has glucose, xylose and galactose as constituent sugars, glucose is β-1,4 bonded to the main chain, xylose is bonded to the side chain, and galactose is further bonded to the xylose. Although galactoxyloglucan itself does not normally gel, it gels in the presence of sugar, ions or alcohol.

  The galactoxyloglucan may be any plant-derived galactoxyloglucan, and can be obtained from, for example, tamarind, jatoba, nastathium seeds, soybeans, mung beans, kidney beans, rice, barley, or other fruit epidermis. Galactoxyloglucan derived from legume tamarind seeds is preferred because it is most readily available and has a large content. As such galactoxyloglucan, a commercially available product can be adopted.

  The galactose partial decomposition product used for the manufacturing method of this embodiment is manufactured by the following manufacturing methods, for example. That is, the galactoxyloglucan derived from the tamarind seeds is maintained at 55 ° C., adjusted to pH 6 with trisodium citrate, added with β-galactosidase, and reacted at 50 to 55 ° C. with stirring for 16 hours. Next, the enzyme is inactivated by heating at 95 ° C. for 30 minutes, then returned to room temperature, added with an equal volume of ethanol, and allowed to stand for 1 hour. The precipitate obtained by leaving is collected by suction filtration, dried by a blow dryer, and then pulverized.

  The β-galactosidase to be used may be plant-derived or microorganism-derived, but an enzyme derived from the microorganism Aspergillus oryzae or Bacillus circulans or an enzyme in seeds containing galactoxyloglucan is preferable. As such β-galactosidase, a commercially available product can be adopted.

  In this enzymatic reaction with β-galactosidase, side chain galactose is partially removed as the reaction proceeds, and when the removal rate reaches around 30%, the reaction solution rapidly thickens and gels. When the removal rate of galactose is in the range of 30 to 55%, the gel has a reversible thermal response gelation property that gels by heating and sols by cooling. If the galactose removal rate is less than 30%, gelation does not occur, and if it exceeds 55%, a gel that is too strong tends to be obtained (see Patent Documents 1 and 2).

Considering this point, it is preferable to use the galactose partial decomposition product obtained by partial decomposition of galactose by 30 to 55%. By setting the removal rate within this range, it is possible to produce a gel composition that is not too strong while being sufficiently gelled by heating. Thereby, it becomes easy to exhibit the reversible heat-responsive gelling property which reversibly fully gels by heating and sufficiently sols by cooling.
As a result, the elasticity and strength of the gel composition can be more sufficiently exhibited by removing 30 to 55% of galactose.

The galactose partial degradation product obtained by partially decomposing 30 to 55% of the galactose is obtained by partially decomposing 30 to 55% of galactose from galactoxyloglucan as described above.
Galactoxyloglucan usually contains about 37% side chain xylose and about 17% side chain galactose (see Gidley et al., Carbohydrate Research, 214 (1991) 219-314). Therefore, it is calculated that the galactose partial decomposition product obtained by partially decomposing 30 to 55% of galactose contains 39 to 41% of side chain xylose and 8 to 12% of side chain galactose.
The partial decomposition rate of galactose (that is, the removal rate of galactose) is determined by measuring the amount of galactoxyloglucan oligosaccharide produced by cellulase decomposition of the obtained partial decomposition product using high-performance liquid chromatography (HPLC) (amino Column) and can be calculated.

  The content of the partially decomposed galactose product is not particularly limited, but is preferably 1 to 10% by mass, more preferably 1 to 5% by mass with respect to the total amount of the gel composition. More preferably, it is -5 mass%.

When the content of the galactose partial decomposition product is 1% by mass or more, the strength of the gel composition can be sufficiently increased more reliably.
On the other hand, when the content of the partially decomposed galactose is 10% by mass or less, an appropriate amount of an aqueous solvent can be retained in the gel composition, and thereby desired elasticity can be exhibited. Moreover, desired gel physical properties and tactile sensation can be exhibited. Further, for example, when the gel composition is produced in a shallow (small depth) container (that is, in a state where the depth of the mixture is reduced), the sheet composition is flexible. Property and strength can be made more satisfactory.
In addition, when the density | concentration of a galactose partial decomposition product is low, the water which did not contribute to gelatinization may become a layer on the upper side of a gel composition, and the downward direction may become a gelation layer. In this case, the content of the partially decomposed galactose may be a content in which the lower gel layer after removing the upper aqueous layer (separated water) is the total amount. That is, what is necessary is just to set it as content with respect to the gel composition whole quantity after concentration.

The said compound, ie, a salt compound, is a 1 type, or 2 or more types of mixture selected from magnesium salt, calcium salt, aluminum salt, and sodium salt.
The compound may be an organic compound or an inorganic compound. In addition, the mixture of two or more includes a composite salt such as aluminum magnesium.
In addition, if an inorganic compound is used among the said compounds, a gel composition will be manufactured with the manufacturing method of the gel composition of this embodiment, and manufacture of the sheet | seat of this embodiment mentioned later using the obtained gel composition. A sheet can be manufactured by the method. On the other hand, if an organic compound is used among the said compounds, a gel composition can be manufactured with the manufacturing method of the gel composition of this embodiment.

The magnesium salt includes magnesium chloride. That, and magnesium chloride (MgCl ₂₎ is. In addition, magnesium bromide, silicate, sulfate, organic acid salt, organic ester salt and the like can be mentioned. Examples of the organic acid salt include gluconate, pantothenate, and acetate. Examples of the organic ester salt include ascorbyl phosphate and the like.

Calcium salts include calcium chloride. That, calcium chloride (CaCl ₂₎ is. Other examples include calcium bromide, silicate, sulfate, organic acid salt, and organic ester salt. Examples of the organic acid salt include gluconate, pantothenate, and acetate. Examples of the organic ester salt include ascorbyl phosphate and the like.

Examples of the aluminum salt include aluminum chloride. That, and aluminum chloride (AgCl ₃₎ is. In addition, aluminum bromide, silicate, sulfate, organic acid salt, organic ester salt and the like can be mentioned. Examples of the organic acid salt include gluconate, pantothenate, and acetate. Examples of the organic ester salt include ascorbyl phosphate and the like.

  Sodium salts include sodium chloride. That is, sodium chloride (NaCl) is mentioned. Other examples include sodium bromide, silicate, sulfate, organic acid salt, and organic ester salt. Examples of the organic acid salt include gluconate, pantothenate, and acetate. Examples of the organic ester salt include ascorbyl phosphate and the like.

  These magnesium salts, calcium salts, aluminum salts, and sodium salts can be used as additives in pharmaceutical preparations. These compounds are preferably of a physiologically acceptable grade so that they can be used safely on a daily basis.

  The compound may be a mixture of two or more selected from magnesium salt, calcium salt, aluminum salt and sodium salt.

Of the above compounds, magnesium and calcium salts and mixtures thereof are preferred.
When the compound is a magnesium salt, a calcium salt, or a mixture thereof, the elasticity and strength of the gel composition are further improved.

  Of the above compounds, magnesium salts are particularly preferred, and specifically, magnesium chloride is particularly preferred.

It is preferable that content of the said compound is 0.1-12 mass% with respect to the whole quantity of a gel composition, and it is more preferable that it is 1-6 mass%.
When the content of the compound is 0.1 to 12% by mass with respect to the total amount of the gel composition, elasticity and strength can be more sufficiently exhibited.

The aqueous solvent is not particularly limited as long as it is a solvent containing water, and examples thereof include water and water containing a small amount of an organic solvent such as ethanol.
In this embodiment, the aqueous solvent can also be used in the form of an aqueous solution obtained by adding the above-mentioned compound or other additives to the aqueous solvent. For example, when water is used as the aqueous solvent, it can be used in a dilute salt aqueous solution in which a small amount of an inorganic compound is dissolved in water. Examples of such a salt aqueous solution include a sodium salt aqueous solution, a calcium salt aqueous solution, and a buffer solution. Examples of such a buffer include a phosphate buffer having a pH of 4 to 7 and a citrate buffer.

The amount of water in the gel composition can be appropriately set according to the use and the like, and is not particularly limited, but is preferably more than 35% by mass with respect to the total amount of the gel composition, and 70% by mass. % Or more is more preferable.
Here, the moisture content of the gel composition is based on the mass of the gel composition before drying when the gel composition is dried under reduced pressure at -0.1 MPa (on the basis of atmospheric pressure) at 70 ° C. for 8 to 12 hours. The ratio (percentage) with respect to the mass of the gel composition before drying of the reduction | decrease of the mass of the gel composition after drying is meant. Specifically, the moisture content of the gel composition means a value measured by a measurement method described in Examples described later.

Moreover, the gel composition of this embodiment may contain additives other than the above as long as it is excellent in elasticity and strength.
Examples of such additives include oily substances, and examples of oily substances include olive oil and silicone oil.

The gel composition of this embodiment is excellent in elasticity and intensity | strength compared with the case where this compound is not contained by containing the said galactose partial decomposition product and the said compound.
Therefore, it is more excellent in elasticity and strength than conventional.

  Subsequently, the sheet | seat of this embodiment obtained using the said gel composition is demonstrated.

The sheet of this embodiment comprises a galactose partial degradation product of galactoxyloglucan, an inorganic compound that is one or a mixture of two or more selected from magnesium salts, calcium salts, aluminum salts, and sodium salts, and an aqueous solvent. contains.
Specifically, the sheet of the present embodiment is formed by drying the gel composition of the present embodiment. That is, the sheet of this embodiment contains an inorganic anion salt compound among the compounds (salt compounds) contained in the above-described gel composition of this embodiment as an inorganic compound.

The moisture content of the sheet is not particularly limited, but can be appropriately set according to the thickness of the sheet, for example, and is not particularly limited. The moisture content of the sheet is usually 10% by mass or more and 35% by mass or less, and preferably 10% by mass or more and 30% by mass or less.
This moisture content means the value measured by the method as described in the Example mentioned later.
When the moisture content of the sheet is 10% by mass or more and 35% by mass or less, the sheet has excellent strength and flexibility, including ductility. Moreover, it can have moderate adhesiveness (tackiness). In this respect, the water content is more preferably 25% by mass or less.
Such moisture content can be adjusted by the content of the galactose partial decomposition product in the gel composition, the content of the inorganic compound, the thickness of the sheet, the drying temperature, the drying time, and the like.

The content of the partially decomposed galactose is preferably 15 to 80% by mass, and more preferably 15 to 70% by mass with respect to the total amount of the sheet.
When the content of the galactose partial decomposition product is 15 to 80% by mass with respect to the total amount of the sheet, flexibility and strength can be more sufficiently exhibited. Furthermore, flexibility and strength can be more sufficiently exhibited by being 15 to 70% by mass.

Of the above inorganic compounds, magnesium salts and calcium salts and mixtures thereof are preferred. What was mentioned above is mentioned as an inorganic compound of a magnesium salt and a calcium salt.
When the inorganic compound is a magnesium salt, a calcium salt, or a mixture thereof, the flexibility and strength of the sheet are further improved.

  Of the inorganic compounds, magnesium salts are particularly preferable, and specifically, magnesium chloride is particularly preferable.

The inorganic compound may further contain a sodium salt or a potassium salt.
What was mentioned above is mentioned as an inorganic compound of a sodium salt.
Examples of the potassium salt inorganic compound include potassium chloride. That is, potassium chloride (KCl) is mentioned.

It is preferable that content of an inorganic compound is 10-70 mass% with respect to the whole quantity of a sheet | seat.
When the content of the inorganic compound is 10 to 70% by mass with respect to the total amount of the sheet, flexibility and strength can be more sufficiently exhibited.

Although the thickness of a sheet | seat is not specifically limited, According to a use etc., it can set suitably. For example, the thickness of the sheet can be 0.01 to 5 mm, preferably 0.03 to 3 mm, more preferably 0.1 to 1 mm, and still more preferably 0.2 to 0.5 mm.
When the thickness of the sheet is 0.03 to 3 mm, it is difficult to break and handled. Moreover, when sticking, it is easy to stick.
The thickness of such a sheet can be adjusted by the content of the galactose partial decomposition product in the gel composition, the content of the inorganic material, the thickness of the gel composition before drying, and the like.

  As the sheet, in addition to flexibility and strength, those having extensibility, crack resistance, tensile resistance, adhesion (tackiness), shape retention, water resistance, and heat resistance are preferable.

  The sheet | seat of this embodiment is more excellent in the softness | flexibility and intensity | strength than before by containing the galactose partial decomposition product, the said inorganic compound, and an aqueous solvent.

  Next, a method for producing the gel composition of the present embodiment will be described.

  The method for producing the gel composition of the present embodiment is not particularly limited as long as the gel composition can be prepared by dissolving the partially decomposed galactose and the above compound in an aqueous solvent, for example, The following method is preferred.

The method for producing a gel composition of the present embodiment includes the following steps (1) to (3).
(1) A galactose partial decomposition product of galactoxyloglucan, a compound which is one or a mixture selected from magnesium salt, calcium salt, aluminum salt and sodium salt, and an aqueous solvent are mixed at room temperature. Obtaining a mixture;
(2) cooling or freezing the mixture obtained in step (1);
(3) The mixture cooled or frozen in step (2) is gelled by heating to obtain a gel composition containing the galactose partial decomposition product and the compound.

  In step (1) in the production method of the present embodiment, the galactose partial decomposition product, the compound, and an aqueous solvent are mixed at room temperature to obtain a mixture.

  The galactose partial decomposition product was mixed with an aqueous solvent at room temperature to obtain a dispersion (ie, a suspension) as a mixture in which the galactose partial decomposition product was dispersed in an aqueous solvent. Further, the above compound may be mixed. The above compound may be completely dissolved in the aqueous solvent or may not be partially dissolved.

  Here, as the aqueous solvent is cooled and the temperature is lowered, the time required for the galactose partial decomposition product to be in a hydrated and swollen state, and further, the time until the hydrated and swollen state is dissolved. Becomes shorter. In addition, in such a state that the time to reach the dissolved state is relatively fast, a relatively strong stirring force is required in order to diffuse the galactose partial decomposition product in the aqueous solvent as uniformly as possible. That is, in order to dissolve the galactose partial decomposition product as uniformly as possible in the cooled aqueous solvent, a relatively strong stirring force is required.

On the other hand, the partial decomposition product of galactose has a much longer time until it reaches a hydrated and swollen state in an aqueous solvent at room temperature and further reaches a dissolved state than when a cooled aqueous solvent is used. Therefore, even if it stirs with the same stirring force, it hardly dissolves.
Therefore, in the step (1), by mixing a galactose partial decomposition product and an aqueous solvent at room temperature, generation of lumps caused by the galactose partial decomposition product can be suppressed.

Further, the order of adding the partially decomposed galactose and the above compound is not particularly limited, but it is preferable to mix the partially decomposed galactose and the aqueous solvent, and then add the above compound and further mix.
Thus, after mixing the galactose partial decomposition product and the aqueous solvent, and further mixing with the above compound, the above compound can be mixed with the galactose partial decomposition product sufficiently dispersed. Things can be mixed more uniformly. Thereby, the elasticity and intensity | strength of the obtained gel composition can be made easy to be exhibited.

  In addition, when mixing the galactose partial decomposition product and the aqueous solvent, even if it seems that a lump of powder is generated in the dispersion, it is easy to loosen with a spatula (spatel) etc. Can be dispersed almost completely. Here, “unwinding” means returning to the unit before forming the lump, and generally means an operation completely different from stirring performed to dissolve the substance.

The temperature of the aqueous solvent when mixing the aqueous solvent, the partially decomposed product of galactose and the above compound is not particularly limited as long as it is room temperature, but it is preferably 18 to 30 ° C, and 18 to 28 ° C. Is more preferable.
By mixing at 18 ° C. or higher, the galactose partial decomposition product can be dispersed in an aqueous solvent while avoiding the formation of lumps. Thereby, the viscosity increase which arises when a galactose partial decomposition product is dissolved can be suppressed more. In addition, the compound can be easily dissolved in an aqueous solvent. Accordingly, it is possible to further suppress the deterioration of workability.
Further, by mixing at 30 ° C. or less, the galactose partial decomposition product can be easily dispersed in an aqueous solvent in a normal room temperature environment without requiring a special environment such as heating. Since it can make it easy to melt | dissolve in an aqueous solvent, operation can be performed simply. In addition, you may mix, heating.
Thus, the fall of workability | operativity can be suppressed more by mixing a galactose partial decomposition product and an aqueous solvent at 18-30 degreeC.

The mixing time when mixing the aqueous solvent, the partially decomposed galactose and the above compound is particularly limited in consideration of the fact that the partially decomposed galactose is very compatible with the aqueous solvent at the above temperature and the above compound is easily dissolved. It can be set as appropriate.
The mixing time can be, for example, 5 minutes to 1 hour, and preferably 10 minutes to 30 minutes.
By setting the mixing time to 1 hour or less, there is an advantage that the operation can be completed quickly and workability is improved.

  According to the step (1), before cooling or freezing in the step (2), the gel composition as a molded product formed into a desired shape is obtained by transferring the mixture to a mold having a desired shape. Is also possible.

In step (2), the mixture obtained in step (1) is cooled or frozen.
More specifically, by cooling or freezing the dispersion obtained in the step (1), the galactose partial decomposition product is hydrated and swollen in a hydration solvent to obtain a hydrated swollen product in which the above compound is dissolved. .
Hydrated swells include liquid hydrated swells that have been cooled but not frozen, and frozen solid hydrated swells. In step (2), the aqueous solvent may contain a dissolved product in which a partially decomposed product of galactose is dissolved.

According to the step (2), by cooling or freezing the mixture of the aqueous solvent, the galactose partial decomposition product and the above compound, the galactose partial decomposition product in the state dispersed in the aqueous solvent in the step (1). It can be hydrated and swollen with water in an aqueous solvent. Since it can be hydrated and swollen in this way, the onset of viscosity can be relatively delayed, thereby allowing the galactose partial degradation product to be dissolved in an aqueous solvent without the need for relatively strong forced stirring as in the prior art. Can be dispersed. In this way, forced stirring or the like can be made unnecessary, so that it becomes simpler.
In step (2), the compound is dissolved in an aqueous solvent, but may not be partially dissolved.
Further, the forced stirring in the step (2) is not hindered, and when the forced stirring is performed, the galactose partial decomposition product can be hydrated and swollen more quickly than the case where the forced stirring is not performed. Become.

In the cooling or freezing, if the galactose partial decomposition product in the mixture (dispersion) obtained in step (1) can be hydrated and swollen, the temperature of the mixture is particularly limited. Instead, it can be set as appropriate.
Here, the lower the temperature at which the temperature of the mixture is lowered, the easier it is to hydrate and swell the partially decomposed product of galactose. On the other hand, the hydrated swelling tends to progress excessively and the viscosity tends to be expressed.
Therefore, for example, in consideration of such a viewpoint, it is preferable to cool or freeze the mixture obtained in the step (1) to −25 to 10 ° C.
About the upper limit of the temperature range which cools the said mixture, it becomes easy to hydrate and swell a galactose partial decomposition product by setting it as 10 degrees C or less. Further, the upper limit is more preferably 5 ° C., and further preferably 1 ° C., in that the galactose partial decomposition product is more easily hydrated and swollen.
On the other hand, regarding the lower limit of the temperature range for lowering the temperature of the mixture, by setting the temperature to −25 ° C., excessive progress of hydration and swelling can be suppressed, and viscosity can be hardly developed.

In the step (3), the mixture cooled or frozen in the step (2) is gelled by heating to obtain a gel composition containing the galactose partial decomposition product, the above compound and an aqueous solvent.
More specifically, in the step (3), the hydrated swollen product and dissolved product obtained in the step (2) are gelled by heating to obtain a gel composition.

In the heating, the temperature of the mixture may be raised to a temperature sufficient to cause the cooled or frozen mixture (hydrated swollen product) obtained in the step (2) to gel. The degree of heating is not particularly limited and can be set as appropriate.
Here, the higher the temperature at which the temperature of the cooled or frozen mixture is raised, the gel strength can be increased. On the other hand, wasteful heating operations increase and workability tends to decrease.
Therefore, for example, in consideration of this viewpoint, it is preferable to raise the temperature of the cooled or frozen mixture to 25 to 80 ° C.
By setting the lower limit of the temperature to be raised to 25 ° C., the gel strength can be sufficiently increased. Further, in terms of sufficiently increasing the gel strength, the lower limit is more preferably 25 ° C, and further preferably 40 ° C.
By setting the upper limit of the temperature to be raised to 80 ° C., useless heating operation can be suppressed, and thereby deterioration of workability can be suppressed. Moreover, it is preferable to set it as 50 degreeC about the upper limit at the point which suppresses useless heating operation more.

According to the method for producing a gel composition of the present embodiment described above, in step (1), the galactose partial decomposition product of galactoxyloglucan, the above compound, and an aqueous solvent are mixed at room temperature. It is possible to disperse a galactose partial decomposition product in an aqueous solvent without causing lumps.
In step (2), the galactose partial decomposition product can be hydrated and swollen in an aqueous solvent by cooling or freezing the mixture obtained in step (1). At this time, it becomes easy to make the galactose partial decomposition product into a hydrated swollen state instead of a dissolved state. Thereby, the viscosity of a mixture can be made low and a mixture can be made into a highly viscous hydration swollen by cooling or freezing.
Furthermore, since the onset of viscosity can be relatively delayed, the galactose partial degradation product can be sufficiently dispersed in an aqueous solvent without the need for relatively strong forced stirring as in the prior art.
In addition, according to the steps (1) and (2), it is not necessary to cool the aqueous solvent in advance, and accordingly, preparation time and labor can be saved.
And in a process (3), a mixture can be gelatinized by heating and gelatinizing the mixture cooled or frozen by the process (2). At this time, the obtained gel composition is one in which mixing of non-hydrate due to the galactose partial decomposition product is suppressed.
In the step (3), when the cooled mixture is heated, the mixture is preferably thawed by heating, then forcibly stirred and then heated. It is also preferable to heat the mixture while thawing and then heat it with forced stirring. Thus, a more homogeneous gel composition is obtained by performing forced stirring at the time of heating. In addition, performing such forced stirring is particularly suitable when performing step (3) on a low-concentration galactose partial decomposition product in which an aqueous layer is formed. By this, the gel composition can be more homogenized.
Therefore, by providing the steps (1) to (3), the gel composition of the present embodiment can be easily produced.

For example, polysaccharides such as locust bean gum become lumps when dispersed in an aqueous solvent at room temperature, and it takes a lot of time or heat to eliminate the lumps. Or For this reason, for example, after being put into an aqueous solvent, it is necessary to disperse by forced stirring or heating. And after making it disperse | distribute, it can be made to gelatinize by freezing and further thawing. However, if heating is continued after freezing, the gel is transferred to the sol and the gel is dissolved.
On the other hand, as described above, the partially decomposed product of galactose does not form a sol even if the heating is continued after cooling.

Further, as described above, the partially decomposed galactose used in the production method of the present embodiment has reversible thermal gelation properties, and more specifically, is gelled by heating to about body temperature. It has the following characteristics. Therefore, the manufacturing method of this embodiment may apply the mixture (relatively low-temperature hydrated swelling) obtained in the step (2) to the skin and perform the gelation in the step (3) depending on body temperature. Good. That is, the gel composition may be prepared at the time of use.
Moreover, the mixture (hydrated swollen product) after cooling or freezing in the step (1) may be stored at a low temperature of, for example, 15 ° C. or lower until it is used in the step (3) as necessary. And the mixture preserve | saved in this way is transferred to the casting mold of desired shape, before performing the heating in a process (3), The gel composition as a molded article is implemented by implementing a process (3) in this state. It can also be obtained.

According to the method for producing a gel composition of this embodiment, in step (1), the galactose partial decomposition product of galactoxyloglucan and an aqueous solvent are mixed at room temperature to dissolve the compound in an aqueous solvent. However, the galactose partial decomposition product can be dispersed in an aqueous solvent without causing lumps in the mixture.
In step (2), the galactose partial decomposition product can be hydrated and swollen in an aqueous solvent by cooling or freezing the mixture obtained in step (1). At this time, it becomes easy to make the galactose partial decomposed product not in a dissolved state but in a hydrated and swollen state. Thereby, the viscosity of a mixture (dispersion) can be made low, and a mixture can be made into a highly viscous hydrated swelling by cooling or freezing.
Furthermore, since the onset of viscosity can be relatively delayed, the galactose partial degradation product can be sufficiently dispersed in an aqueous solvent without the need for relatively strong forced stirring as in the prior art.
Furthermore, according to the steps (1) and (2), it is not necessary to cool the aqueous solvent in advance, and accordingly, preparation time and labor can be saved.
And in a process (3), a mixture can be gelatinized by heating and gelatinizing the mixture cooled or frozen by the process (2). At this time, in the obtained gel composition, mixing of non-hydrates such as lumps caused by the galactose partial decomposition product is suppressed.
Therefore, by providing the steps (1) to (3), a gel composition containing a partially decomposed galactose product, the above compound, and an aqueous solvent can be easily produced.

  Next, a method for manufacturing the sheet of the present embodiment will be described.

  The sheet manufacturing method of this embodiment uses a specific inorganic compound among the above compounds, and prepares the sheet by drying the gel composition manufactured by the method of manufacturing the gel composition of the present embodiment. .

  That is, the sheet manufacturing method of the present embodiment uses an inorganic compound that is one or a mixture of two or more selected from a magnesium salt, a calcium salt, and an aluminum salt in the above step (1). The above steps (1) to (3) and the step (4) for producing a sheet by drying the gel composition obtained in the steps (1) to (3) are provided.

  The drying temperature and drying time can be appropriately set depending on the content of the galactose partial decomposition product in the gel composition, the content of the inorganic compound, the thickness of the sheet, and the like.

For example, the drying temperature is preferably 25 ° C. or higher.
Moreover, it is more preferable that drying temperature is 30 degreeC or more at the point that drying time can be shortened, and it is further more preferable that it is 40 to 80 degreeC.

  For example, the drying time is preferably 3 to 10 hours when the drying temperature is 40 to 80 ° C, and more preferably 10 to 30 hours when the drying temperature is 25 to 40 ° C.

  The gel composition obtained by heating the mixture obtained in the above step (2) to room temperature is made into a sheet using an extrusion method such as a flat die method or a calendar method, and then further heated. Then, the sheet may be produced by gelation and drying. Further, the mixture obtained in the above step (2) may be cast on a support such as a film, drum, or belt, heated to produce a gel composition, and further dried to produce a sheet. . In addition, devices and means that can produce a sheet having a uniform thickness can be appropriately employed.

  In the sheet manufacturing method of the present embodiment, the heating in the step (3) and the drying in the step (4) may be performed continuously and integrally.

  According to the method for producing a sheet of the present embodiment, as described above, the gel composition containing the galactose partial degradation product, the compound, and the aqueous solvent is simply produced by steps (1) to (3). be able to. Moreover, a sheet | seat can be produced only by drying the gel composition obtained at the process (3) at the process (4). Therefore, it is simple.

  In addition, since the gel composition and sheet of this embodiment can be manufactured by gelation by heating, based on this property, home, medical field, biomaterial, cosmetics (for example, gel face pack), etc. As a polymer material usable in various industries, it can be used in various fields. Moreover, since the galactose partial degradation product used in this embodiment is not obtained by chemically modifying a galactoxyloglucan derived from a natural product, the obtained gel composition can also be used safely for a living body. .

  As mentioned above, although the gel composition of this embodiment, the sheet | seat, and those manufacturing methods were demonstrated, this invention is not specifically limited to the said embodiment, A design change is possible suitably within the range which this invention intends. is there.

  Hereinafter, although this invention is demonstrated in detail, referring an Example, this invention is not restrict | limited to these Examples.

(Production Example 1) Production of galactose partial degradation product of galactoxyloglucan and purification of β-galactosidase:
0.025M phosphate buffer of 2.5% aqueous solution of commercially available β-galactosidase “Lactase Y-AO” (manufactured by Yakult; Aspergillus oryzae) having complex enzyme activity by ion exchange chromatography (DEAE Toyopeal; manufactured by Tosoh Corporation) The solution (pH 7.4) was subjected to a 0-0.6M NaCl gradient and eluted at a NaCl concentration of 0.2-0.4M. Furthermore, it was applied to 0.025 M phosphate buffer (pH 7.4) and 0-0.6 M ammonium sulfate gradient of hydrophobic chromatography [Butyl-Toyopeal; manufactured by Tosoh Corporation], and eluted at an ammonium sulfate concentration of 10% or less. By the above operation, 60 mg of purified enzyme was obtained from 2.5 g of commercially available crude enzyme. This product showed no cellulase activity or IPase (isoprimeverose synthase) activity.

・ Production of galactose partial degradation products:
Using the purified enzyme β-galactosidase obtained above, a 1% by mass galactoxyloglucan (DSP Gokyo Food & Chemical Co., Ltd., Griloid (registered trademark)) aqueous solution of the substrate was enzyme concentration 2.4 × 10 ⁻⁵ mass%. After the reaction at pH 5.6 and 50 ° C., the reaction was stopped by heating at 100 ° C. for 20 minutes. The reaction solution gelled in about 15 hours after the start of the reaction to obtain a gel-like composition. The galactose removal rate in the obtained gel composition was calculated by the following method.
1 mL of a cellulase Onozuka RS (manufactured by Yakult) 0.15% by weight solution (50 mM acetate buffer, pH 4.0) was added to 7 g of a 1% by weight aqueous solution of the gel-like composition and reacted at 50 ° C. overnight. . The above 1% by mass galactoxyloglucan aqueous solution was reacted in the same manner as a control. After the reaction, the enzyme was inactivated by heating the reaction solution at 98 ° C. for 30 minutes. Thereafter, the sample was applied to a pretreatment cartridge [manufactured by Tosoh Corporation, IC-SP] and a membrane filter made of 0.45 μm cellulose acetate, and 10 μL of the obtained filtrate was added with acetonitrile: water = 60: 40 (v / v) to 0. Apply to the HPLC amino column flowing at 6 mL / min, and elution area of galactoxyloglucan oligosaccharide (7 sugar (0 galactose), 8 sugar (1 galactose), 9 sugar (2 galactose)) It detected with the differential refractometer. Next, the amount of galactose per unit (7 sugars) was calculated by (8 sugar area + (9 sugar area × 2)) / (7 sugar area + 8 sugar area + 9 sugar area). When the reduction rate of the amount of galactose calculated for the gel-like composition calculated by the above formula from the amount of galactose calculated from the control galactoxyloglucan was further calculated as the galactose removal rate (%), it was about 45%. It was.
Then, the gel-like composition obtained above was freeze-dried, or alcohol was added to the gel-like composition, precipitated and filtered, and then dried to obtain a powdery galactose partial decomposition product.

  In the following experimental examples, a gel composition prepared so as to contain the above compound and a partially decomposed product of galactose was used as an example. On the other hand, a gel composition prepared so as to contain a galactose partial decomposition product without containing the above compound was used as a comparative example.

(Experimental example 1)
(1) Preparation of gel compositions of Examples 1 to 4 In the formulation shown in Table 1, a plastic cup (product name: Promax, capacity: 90 mL, EI-90, manufactured by Asahi Kasei Packs Co., Ltd.) in a plastic container, Production Example 1 After adding 2.0 g (4% by mass) of the partially decomposed galactose obtained in 1 above, and further adding 2.0 g (4% by mass) of MgCl 2, CaCl 2, AlCl 3 or NaCl, water at room temperature was added, and the total amount was 50 g. Then, the mixture was stirred (about 10 seconds) with a plastic mudler to obtain a dispersion containing a partially decomposed galactose product and an inorganic compound as the above compound. Of the obtained dispersion, 40 g was poured into a plastic dish having a diameter of 90 mm. The dispersion liquid in the plastic dish was allowed to stand for 2 hours in a freezer set to −20 ° C. (model: HRF-180XF, manufactured by Hoshizaki Electric Co., Ltd.), the temperature of the dispersion liquid was lowered to −20 ° C., and this state was maintained for 2 hours. And thawed at room temperature. After thawing, a gel composition was prepared by heating at 40 ° C. overnight or at 80 ° C. for 1 to 2 hours using a thermostatic chamber [manufactured by Espec Corp., model: PR-2KP]. After heating, the sample was allowed to stand at room temperature, and the temperature of the sample was lowered to room temperature.
When the obtained composition was visually confirmed, it was certainly gel-like.

(2) Production of Gel Composition of Comparative Example 1 A gel composition was produced in the same manner as in Examples 1 to 4, except that the composition shown in Table 1 did not contain an inorganic compound as the above compound.
When the obtained composition was visually confirmed, it was certainly gel-like.

(3) Preparation of gel compositions of Comparative Examples 2 and 3 In the formulation shown in Table 1, galactoxyloglucan (manufactured by DSP Gokyo Food & Chemical Co., Ltd., Griloid (registered trademark)) was used instead of the galactose partial degradation product. Or using a galactose partial decomposition product without using an inorganic compound, or using the above galactoxyloglocan instead of a galactose partial decomposition product without using an inorganic compound. Thus, a gel composition was prepared.

(4) Evaluation After heating as described above, after allowing to stand at room temperature (20 to 25 ° C.) for several days, the following evaluation was performed on the physical properties of the gel composition. The results are shown in Table 1. In addition, heat resistance is comparable with the past, and the heat resistance fall was not confirmed.
Moreover, when the moisture content was also evaluated as described below, the moisture content of the MgCl 2 -containing gel (Example 1) was 83.7% by mass, and the moisture content of the CaCl 2 -containing gel (Example 2) was 80%. The moisture content of the AlCl 3 -containing gel (Example 3) was 82.3 mass%, and the NaCl-containing gel (Example 4) had a moisture content of 84.2 mass%. The water content of the composition of Comparative Example 1 was 92.5% by mass.

-Moisture content The ratio of the weight loss after drying with respect to the weight before drying measured in advance after drying the gel composition under reduced pressure at -0.1 MPa (atmospheric pressure) at 70 ° C for 8 to 12 hours. The water content was measured by calculating.

-Gel formation Gel formation was investigated by touching the gel at room temperature by hand, and gel formation was evaluated according to the following evaluation criteria.
Not broken: ○
Slightly fragile: △
Fragile: ×

-Elasticity The gel was moderately deformed by pressing the gel at room temperature with a finger. The elasticity was examined by the feel at this time, and the elasticity was evaluated according to the following evaluation criteria.
Very high elasticity: ◎
Has some elasticity: ○
Insufficient elasticity: △
There is no elasticity: ×

・ Tensile tear resistance (strength)
Holding the gel at room temperature with both hands, the tensile tear resistance was examined by applying a force outwardly to the left and right, and the tensile tear resistance was evaluated according to the following evaluation criteria.
Very hard to break: ○
Easy to tear: ×

-Water resistance The water resistance was investigated by immersing the gel in water overnight, and the water resistance was evaluated according to the following evaluation criteria.
Shape does not collapse at all: Water resistance: ○
Shape collapses: No water resistance: ×

-Comprehensive evaluation Comprehensive evaluation was performed by classifying the evaluation of each evaluation item and the number thereof as follows, and judged according to the following criteria.
There is one or more ◎: very good: ◎
× There are no pieces: Good: ○
There is one X: Generally good: △
There are two or more ×: Inferior: ×

As shown in Table 1, Examples 1 to 3 obtained from dispersions containing 4% by mass of a partially decomposed galactose and 4% by mass of an inorganic compound (MgCl2, CaCl2 or AlCl3) based on the composition. It has been found that the gel composition has a high elasticity and strength and exhibits a very good gel composition.
The gel composition containing the NaCl of Example 4 and the gel composition of Comparative Example 1 to which no inorganic compound was added did not yield a gel composition having sufficient elasticity and strength.
The gel composition of Comparative Example 3 did not become a gel.
All the gel compositions of Examples 1 to 4 containing a partially decomposed galactose and an inorganic compound showed water resistance.
The gel compositions of Example 4 and Comparative Examples 1 and 2 collapsed when touched with fingers.
In addition, in terms of elasticity and tensile tear resistance due to the touch of fingers, Examples 1 and 3 were superior to Example 2, and Examples 1 and 3 were comparable.

  In the gel compositions of Comparative Examples 2 and 3 prepared using galactoxyloglucan (DSP Gokyo Food & Chemical Co., Ltd., Griloid (registered trademark)) from which galactose has not been partially removed, in the same manner as in the above Examples. It did not gel with or without MgCl2. Therefore, it was found that a combination of partial decomposition of galactose and inorganic compounds (MgCl2, CaCl2, AlCl3) is necessary for imparting elasticity and strength to the gel composition.

(Experimental example 2)
(1) Production of Sheets of Examples 5 to 63 As shown in Tables 2 to 6, 0.5 g (1% by mass) to 2.5 g (5% by mass) of a galactose partial decomposition product was blended, and MgCl 2, CaCl 2, AlCl3 or NaCl is mixed in an amount of 0.25 g (0.5% by mass) to 6.0 g (12% by mass), and 5 g, 7 g, 10 g, or 20 g is poured into the plastic dish, at 40 ° C. overnight, or at 80 ° C. A sheet obtained by drying the gel composition was prepared in the same manner as in Examples 1 to 4 except that it was heat-dried for 3 to 4 hours. In Tables 2 to 6, the partially decomposed product was represented as “parts”.
(2) Production of Sheets of Comparative Examples 4 to 41 In the formulation shown in Table 7, galactoxyloglucan (DSP Gokyo Food & Chemical Co., Ltd., Griloid (registered trademark)) is used instead of the galactose partial degradation product, Except using the galactose partial decomposition product without using an inorganic compound, or using the galactoxyloglocan in place of the galactose partial decomposition product without using an inorganic compound, A gel composition was prepared. In Table 7, gliloid was expressed as “Gu”.

(3) Evaluation After heating as described above, after standing at room temperature (20 to 25 ° C.) for 1 day or longer, the following evaluation was performed on the physical properties of the sheet. The results are shown in Tables 2-7.
Moreover, when the moisture content was also evaluated as described below, the moisture content of Example 39 was 16.2% by mass, and the moisture content of Example 41 was 16.5% by mass. On the other hand, the moisture content of the comparative example 26 which does not contain an inorganic compound was 7.4 mass%. That is, it was found that the sheet containing no inorganic compound cannot contain much moisture in the sheet.

-Moisture content After the prepared sheet was dried under reduced pressure at -0.1 MPa (on the basis of atmospheric pressure) at 70 ° C for 8 to 12 hours, the weight loss after drying with respect to the sheet weight before drying measured in advance The water content was measured by calculating the ratio.

-Confirmation that either S (including GS) or F is formed (GSF formation)
Whether or not the sheet was formed was confirmed by visual and tactile sensation, and whether or not the sheet was formed was evaluated according to the following evaluation criteria.
Sheet is formed: ○
Insufficient sheet formation: △
No sheet is formed: ×

-Sheet classification The thickness of the prepared sheet was measured according to JIS K7130 for the sheet formed and the sheet formed insufficiently by the visual and tactile confirmation described above. Further, a sheet having a thickness of less than 0.25 mm (250 μm) was represented as “F”, and a sheet having a thickness of 0.25 mm or more was represented as “S”. Moreover, what was in the state which contains water | moisture content fully by tactile sense and visual observation was represented by "GS" as being a gel-like sheet | seat.

-Flexibility Flexibility was examined by confirming the tactile sensation of the produced sheet, and the flexibility was evaluated according to the following evaluation criteria.
Turn freely: Very high: ◎
Turn easily: High: ○
Bends when a little force is applied: Almost flexible: △
Even if you try to bend with force, it will not bend: Inadequate: ×

-Extensibility The stretchability was examined by pulling the prepared sheet by hand, and the extensibility was evaluated according to the following evaluation criteria.
It grows very easily: Very high: ◎
Easily stretched: High: ○
Stretched by applying a little force to stretch: Generally stretched: △
Does not stretch even when pulled with force: Does not extend: ×

-Crack resistance The crack resistance was investigated by bending the produced sheet by hand, and the crack resistance was evaluated according to the following evaluation criteria.
Not broken: ○
Hard to break: △
Easy to break: ×

・ Tensile tear resistance (strength)
Holding the sheet at room temperature with both hands, the tensile tear resistance was examined by applying a force to the sheet laterally outward, and the tensile tear resistance was evaluated according to the following evaluation criteria.
Very hard to break: ○
Generally difficult to break: △
Easy to tear: ×

-Water resistance The water resistance was investigated by immersing the sheet in water overnight, and the water resistance was evaluated according to the following evaluation criteria.
Shape does not collapse at all: Water resistance: ○
Shape collapses: No water resistance: ×

-Container adhesion after heating Check the container adhesion after heating by visually confirming whether the prepared sheet is adhered to the bottom of the container that will become the mold after drying, and adhere the container after heating according to the following evaluation criteria Sex was evaluated.
Bonded to the container: ○ Not bonded to the container: ×

-Again container adhesion (adhesion (stickiness))
After removing the prepared sheet from the container, lightly press it again on the bottom of the same container to visually check whether the sheet is adhered to the container bottom. evaluated.
Adhere again: ○
Do not bond again: ×

-Transparency Transparency was investigated by visually observing the prepared sheet, and transparency was evaluated according to the following evaluation criteria.
When the sheet is placed on the back of the hand, the underlying skin is clearly visible through the sheet: Transparent: ○
When the sheet is placed on the back of the hand, the underlying skin is difficult to see through the sheet: Not transparent: ×

・ Comprehensive evaluation Transparency, container adhesion after heating, container adhesion again, evaluation of each evaluation item other than the formation of GSF and the number of those items are classified as follows, and judged according to the following criteria did.
There is no x, ◎ is 1 or more, and △ is 1 or less: very good: ◎
No x, no ◎, 2 or more ○: Good: ○
× is 1 or more: Inferior: ×

As shown in Tables 2 to 7, obtained from a dispersion liquid containing 1 to 5% by mass of a galactose partial decomposition product and 0.5 to 12% by mass of an inorganic compound (MgCl2, CaCl2, AlCl3) based on the composition. The obtained sheet was found to be a very excellent sheet having water resistance and flexibility. On the other hand, the sheet containing NaCl did not have flexibility.
Further, when the gel composition contains a relatively large amount of MgCl2, CaCl2 or AlCl3, the adhesiveness of the sheet tends to increase.
Furthermore, it has been found that the sheet can be produced while adjusting the thickness by changing the amount of the sheet loaded into the plastic dish.

  Using galactoxyloglucan (DSP Gokyo Food & Chemical Co., Ltd., Griloid (registered trademark)) from which galactose was not partially removed, an attempt was made to produce a sheet in the same manner as in the above Example, and MgCl2 was contained. A flexible sheet was obtained from the gel composition, but dissolved when immersed in water. Therefore, it was found that a combination of a partial decomposition product of galactose of galactoxyloglucan and an inorganic compound of MgCl2, CaCl2, and AlCl3 is necessary for imparting water resistance and flexibility to the sheet.

(Experimental example 3)
(1) Preparation of gel compositions of Examples 64-69 Gel compositions were prepared and evaluated in the same manner as in Examples 1-4 except that the formulations shown in Tables 8-10 below were set. The results are shown in Tables 8-10.

(2) Preparation of gel composition of Comparative Example 42 A gel composition was prepared and evaluated in the same manner as Comparative Examples 4 to 40 except that the composition shown in Table 8 below was set. The results are shown in Table 8.

(Experimental example 4)
(1) Production of Sheets of Examples 70 to 86 Sheets were produced and evaluated in the same manner as in Examples 5 to 63 except that the formulations shown in Tables 11 to 13 below were set. The results are shown in Tables 11-13.

(2) Production of Sheets of Reference Example 1 and Comparative Examples 43 to 45 Sheets were produced and evaluated in the same manner as in Comparative Examples 2 to 40 except that the composition shown in Table 14 below was set. The results are shown in Table 14.

As shown in Table 8, a gel obtained from a dispersion containing 10% by mass of a partially decomposed galactose and 10% by mass of an inorganic compound (MgCl 2) in the composition also has elasticity and strength. It was an excellent gel. Also, Table 9, as shown in Table 10, two or three of the inorganic compound (MgCl2, CaCl2, AlCl ₃₎ gel the strength with elasticity obtained from dispersions formulated with the composition Medium It was an excellent gel.

As shown in Tables 12 and 13, the sheet obtained from the dispersion containing _two or three inorganic compounds (MgCl ₂ , CaCl ₂ , AlCl ₃ ) in the composition is water resistant and flexible. It was an excellent sheet. On the other hand, even if 0.2% by mass of NaCl was contained in a sheet containing 3.8% by mass of MgCl ₂ , the sheet was excellent in water resistance and flexibility, and was an excellent sheet.

As shown in Table 11, obtained from a dispersion containing 1 to 5% by mass of a partially decomposed galactose and 0.5 to 10% by mass of an inorganic compound (CaCl ₂ , AlCl ₃ ) based on the composition. The sheet had excellent flexibility as well as water resistance, and was an excellent sheet. Further, even sheets obtained from the dispersion obtained by blending 10 wt% of galactose partial degradation product and 10 wt% inorganic compounds (MgCl ₂₎ of the composition medium, has flexibility with water resistance, excellent It was a sheet. On the other hand, as shown in Table 14, the sheet containing 2 to 5% by mass of galactose partial decomposition product and 1 to 10% by mass of NaCl did not have flexibility, but 1% by mass of galactose partial decomposition product. And a sheet containing 0.5% by mass of NaCl had flexibility as well as water resistance.

(Experimental example 5)
Stability of a sheet containing an inorganic compound as the above compound In the same manner as in Examples 39 and 40, a sheet composition containing magnesium chloride and calcium chloride was prepared and allowed to stand at 50 ° C. for 1 month. After standing for 1 month, the sheet was moved to room temperature and allowed to stand at room temperature for 1 day or longer. After standing, the flexibility, extensibility, and water resistance were evaluated in the same manner as described above. The sheets that were allowed to stand at 50 ° C. for 1 month both showed the same flexibility, extensibility, and water resistance as the sheets obtained in Experimental Example 2 (Examples 39 and 40).

(Experimental example 6)
Evaluation of Physical Properties of Sheets Sheets of Examples 39, 40, and 41 prepared in Experimental Example 2 (sheets containing 4 wt% magnesium chloride, calcium chloride, or aluminum chloride and 4 wt% galactose partial decomposition product), and The breaking strain of the sheet of Comparative Example 26 was measured according to JIS K7127 (1999) except that the tensile speed was 60 mm / min. The results are shown in Table 15. As shown in Table 15, in the sheet obtained by adding various inorganic compounds, an extremely large breaking strain was seen as compared with the sheet not containing the inorganic compound. Therefore, the sheet obtained by adding various inorganic compounds was found to have excellent ductility.

  The reason why the sheet of the example is excellent in flexibility, strength, and extensibility is not clear, but hydration occurs when the galactose partial decomposition product incorporates an inorganic compound, and this hydrated water is the sheet after drying. It is assumed that it contributes to the flexibility of Specifically, intermolecular bonds are strengthened by intercalating inorganic salts (ions) in gels (partially decomposed molecules), and hydrated water content is increased by incorporating inorganic compounds (inorganic salts). It is assumed that Since galactoxyloglucan, which is the basic skeleton of the partial decomposition product of galactose, is a neutral polysaccharide, it is presumed to be different from the mechanism of gelation by carboxy group crosslinking by ions (Ca, Mg, etc.) seen in pectin and the like.

  In addition, the sheets of the examples have little moisture at first glance and may have low flexibility immediately after drying by heating, but the moisture content reaches equilibrium when stored indoors for several days. It was found that sex was obtained.

  In the sheet of the example, the range of the added amount of the inorganic salt capable of producing a better sheet tended to be slightly different depending on the concentration of the partially decomposed product. The higher the concentration of the partially decomposed product, the higher the upper limit of the amount of inorganic salt that can produce a good sheet gel.

  Considering this point, the ratio of the galactose partial decomposition product and the inorganic compound varies depending on the amount of the galactose partial decomposition product as described above, but is preferably 4: 1 to 1: 3. 1: 1.5 is preferred.

  Specifically, when the content of the partial decomposition product of galactose is 1 to 2% by mass, the content of magnesium chloride is preferably 0.5 to 1% by mass, and the content of the partial decomposition product of galactose Is 3 to 4% by mass, the content of magnesium chloride is preferably 1 to 4% by mass, and when the content of the partially decomposed galactose is 5% by mass, the content of magnesium chloride Was 2 to 10% by mass. Moreover, when the content of the partially decomposed galactose is more than 5% by weight and 10% by weight or less, the content of magnesium chloride is preferably 5 to 10% by weight. As a result, it was suggested that the higher the concentration of the partially decomposed galactose, the more likely it becomes a gel (network) structure that can incorporate inorganic salts.

When the inorganic salt content is less than or equal to the optimum content, a sheet with insufficient flexibility and strength is produced. On the other hand, when the excess amount is less than the optimum content or less, the gel increases with the inorganic salt content. It became difficult to form, and it turned out that it became an intermediate between a gel-like thing and a highly viscous thing, or just a highly viscous thing.
Due to the characteristics of such an inorganic salt, it was found that a sheet having adhesiveness (excellent adhesiveness) can be produced by adding an inorganic salt with an excessive amount or less and a relatively high content.

(Experimental example 7)
Except having set to the mixing | blending shown in following Table 16, it carried out similarly to Examples 1-4, and produced the gel composition and evaluated similarly. The results are shown in Table 16. Table 16 also shows the results of Comparative Example 1 and Example 1 in Table 1.

As shown in Table 16, as the above compound, ascorbyl magnesium phosphate (MAP), sodium ascorbyl phosphate (NAP), magnesium gluconate (MgG), calcium gluconate (CaG), calcium pantothenate (CaP), magnesium acetate Even when an organic compound (organic salt) such as (MgOAc ₂ ) is used, an inorganic compound (inorganic) such as aluminum magnesium silicate (AlMgSil), magnesium bromide (MgBr ₂ ), and sodium sulfate (Na ₂ SO ₄ ) Even when the salt is used, the gel composition obtained by blending 4% by mass of these with 4% by mass of the galactose partial decomposition product has high elasticity and strength. I found out. Therefore, it turned out that these gel compositions show the outstanding gel characteristic.

(Experimental example 8)
Sheets were prepared and evaluated in the same manner as in Examples 1 to 4 except that the formulation shown in Table 17 below was set. The results are shown in Table 17. Table 17 also shows the results of Comparative Example 25 in Table 4 and the results of Example 38 in Table 5.

As shown in Table 17, when magnesium bromide was used among the compounds shown in Table 16, it was obtained by blending 4% by mass of magnesium bromide and 4% by mass of galactose partial decomposition product. The sheet was found to have water resistance and flexibility. Therefore, it was found that this sheet exhibits excellent sheet characteristics.
In addition, even if it was a case where any of the compounds shown in Table 16 was used, it turned out that the obtained sheet | seat has water resistance.

  From the above, it was found that very high flexibility and extensibility can be imparted to the sheet by blending inorganic salts of magnesium, calcium and aluminum, particularly chloride salts, together with a galactose partial decomposition product.

On the other hand, it has been found that even when organic salts of magnesium, calcium and aluminum are blended together with a galactose partial decomposition product, flexibility and extensibility cannot be imparted to the sheet.
In addition, when ascorbyl phosphate salt is blended with galactose partial degradation product, as mentioned above, it does not give flexibility and extensibility, but unlike gluconate and pantothenate, it gives transparency to the sheet I knew it could be. As a result, although the galactose partial degradation product has an affinity for the ascorbyl phosphate salt even after drying (the property that the galactose partial degradation product includes the ascorbyl phosphate salt, that is, inclusion), the sheet contains both. This is presumably due to the low hydration (hygroscopicity).

  Moreover, even if it was a sheet | seat of any of above-described comparative examples once dried at the time of manufacture, even if it made it absorb moisture after that, a softness | flexibility and extensibility were not provided. This result is presumed to be due to the low hydration (hygroscopicity) of the sheet even when the galactose partial decomposition product is blended with the compound of the comparative example to form a sheet, as described above.

In addition, after the sheet is dried, the sheet is allowed to absorb moisture by the humidity of the external environment so that the sheet contains moisture, or the sheet can be forced to contain moisture by adding an aqueous solvent to the sheet. . Examples of the method of adding the aqueous solvent to the sheet after drying include applying the aqueous solvent to the sheet or immersing the sheet in the aqueous solvent.
Here, when the gel composition is dried to produce a sheet, the sheet releases a certain amount of moisture contained therein or absorbs moisture in the environment. It becomes a state containing moisture (steady state).
Therefore, when it is dried excessively until it reaches a moisture content lower than the moisture content in the steady state, water can be absorbed until the moisture content returns to the steady state.
Even in this case, in the case of using a compound that makes the hygroscopicity of the sheet after drying relatively high, that is, in the case of a sheet containing an inorganic compound, a sheet imparted with flexibility and extensibility can be obtained. it can.

(Experimental example 9)
Regarding the magnesium salt, calcium salt, aluminum salt, and sodium salt blended together with the galactose partial decomposition product, the relationship between the hydration water and solubility of each compound and the flexibility and extensibility of the sheet containing each compound was investigated. .
The results are shown in Table 18.

As shown in Table 18, it seemed that there was a tendency for the flexibility and extensibility of the sheet to improve as the compound added was increased in hydration water and water solubility.
Therefore, as described above, the saturated water content of the sheet that can affect the flexibility and extensibility of the sheet is the hydration property (hygroscopicity) of the inorganic compound present in the sheet, the galactose partial decomposition product and the inorganic substance. It is speculated that the affinity with the compound and the affinity between the galactose partial degradation product and the bound water of the inorganic compound may also be affected.
From the above, one or two or more inorganic compounds selected from magnesium salt, calcium salt and aluminum salt, which are blended with a galactose partial degradation product in the sheet, are excellent in hydration and affinity. It has been found that inorganic compounds are preferred.
Examples of the hydration index include the number of hydrated water and the solubility in water at 20 ° C. The hydration water of the above compound is 2 to 10 molecules, and the solubility of water at 20 ° C. is 20 to 100 g. / 100 mL is preferable.

(Experimental example 10)
Manufacture of gel face pack 1
Add 16.0 g (4% by mass) of a partially decomposed galactose to a metal container having a width of 25 cm and a length of 30 cm, add 16.0 g (4% by mass) of MgCl ₂ , add water at room temperature, 400 g, and stirred with a plastic mudler (about 30 seconds) to obtain a dispersion containing a partially decomposed galactose and MgCl ₂ . The obtained dispersion was put in a metal container, lowered to -20 ° C. in a freezer set to −20 ° C. (model: HRF-180XF manufactured by Hoshizaki Electric Co., Ltd.), and kept in this state for 2 hours. Then, it thawed at room temperature. After thawing, the gel composition was prepared by heating at 80 ° C. for 2 hours using a thermostat [manufactured by Espec Corp., model: PR-2KP]. After heating, the gel composition was allowed to stand at room temperature, and the temperature was lowered to room temperature. The obtained gel composition was cut into a face shape to prepare a gel face pack.
The resulting gel face pack showed high elasticity and strength. Moreover, moderate extensibility was seen and it was excellent in adhesiveness.

Manufacture of gel face pack 2
After adding 16.0 g (4 mass%) of a galactose partial decomposition product to a metal container having a width of 25 cm and a height of 30 cm, and further adding 16.0 g (4 mass%) of ascorbyl magnesium phosphate, water at room temperature is added, The total amount was 400 g, and the mixture was stirred with a plastic mudler (about 30 seconds) to obtain a dispersion containing a partially decomposed galactose and magnesium ascorbyl phosphate. The obtained dispersion was put in a metal container, lowered to -20 ° C. in a freezer set to −20 ° C. (model: HRF-180XF manufactured by Hoshizaki Electric Co., Ltd.), and kept in this state for 2 hours. Then, it thawed at room temperature. After thawing, a gel composition was prepared by heating at 35 ° C. for 4 hours using a thermostat [manufactured by Espec Corp., model: PR-2KP]. After heating, the gel composition was allowed to stand at room temperature, and the temperature was lowered to room temperature. The obtained gel composition was cut into a face shape to prepare a gel face pack.
The obtained gel face pack showed high elasticity and strength as in the case of containing the MgCl ₂ . Moreover, moderate extensibility was seen and it was excellent in adhesiveness.

  When the gel composition is dried by heating and the moisture on the surface side is locally reduced, the inner side is elastic and relatively soft, while the surface side is flexible. Tends to be relatively harder than the inside. Therefore, by adjusting the amount of moisture on the surface side, it is also possible to impart characteristics different from those on the inner side to the surface side.

Claims (14)

  A gel composition comprising a galactose partial decomposition product of galactoxyloglucan, a compound which is one or a mixture of two or more selected from magnesium salts, calcium salts, aluminum salts and sodium salts, and an aqueous solvent.   The gel composition according to claim 1, wherein a content of the galactose partial degradation product is 1 to 5 mass% with respect to a total amount of the gel composition.   The gel composition according to claim 1 or 2, wherein the content of the compound is 0.1 to 12% by mass with respect to the total amount of the gel composition.   The gel composition according to any one of claims 1 to 3, which is used for a face pack.   A sheet containing a galactose partial decomposition product of galactoxyloglucan, an inorganic compound which is one or a mixture of two or more selected from a magnesium salt, a calcium salt and an aluminum salt, and an aqueous solvent.   The sheet according to claim 5, wherein the inorganic compound further contains a sodium salt or a potassium salt.   The sheet | seat of Claim 5 or 6 whose moisture content of the said sheet | seat is 10-35 mass% with respect to the whole quantity of the said sheet | seat. A method for producing a gel composition comprising the following steps (1) to (3):
(1) A galactose partial decomposition product of galactoxyloglucan, an inorganic compound which is one or a mixture selected from magnesium salt, calcium salt, aluminum salt and sodium salt, and an aqueous solvent are mixed at room temperature. To obtain a mixture,
(2) cooling or freezing the mixture obtained in step (1);
(3) A step of obtaining a gel composition containing the galactose partial decomposition product, the compound and the aqueous solvent by gelling the mixture cooled or frozen in step (2) by heating.   The said manufacturing method of the gel composition of Claim 8 which mixes the said galactose partial decomposition product, the said compound, and the said aqueous solvent at 18-30 degreeC in the said process (1).   In the said process (1), after mixing the said galactose partial decomposition product and the said aqueous solvent, it is further mixed with the said compound, The manufacturing method of the gel composition of Claim 8 or 9. A method for producing a sheet comprising the following steps (1) to (4):
(1) A galactose partial decomposition product of galactoxyloglucan, an inorganic compound that is one or more selected from a magnesium salt, a calcium salt and an aluminum salt, and an aqueous solvent are mixed at room temperature to obtain a mixture. Obtaining a step;
(2) cooling or freezing the mixture obtained in step (1);
(3) A step of obtaining a gel composition containing the galactose partial decomposition product, the inorganic compound, and the aqueous solvent by gelling by heating the mixture cooled or frozen in step (2);
(4) A step of drying the gel composition obtained in step (3) to produce a sheet.   The sheet manufacturing method according to claim 11, wherein the inorganic compound further contains a sodium salt or a potassium salt.   In the said process (1), the said galactose partial decomposition product, the said inorganic compound, and the said aqueous solvent are mixed at 18-30 degreeC, The manufacturing method of the sheet | seat of Claim 11 or 12.   In the said process (1), after mixing the said galactose partial decomposition product and the said aqueous solvent, it is further mixed with the said inorganic compound, The manufacturing method of the sheet | seat in any one of Claims 11-13.