JP2007174993A - Disperse system colloid-like composition of sea alga micronized material, and method for producing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colloid-like composition by dispersing in water a sea alga micronized material which is excellent in dispersability in water and favorably increased in absorption of valuable components in the human body, and to provide a method for producing the colloid-like composition. <P>SOLUTION: This disperse system colloid-like composition has a sinking volume of ≥5.0 cm<SP>3</SP>/g. The sinking volume means a ratio of a volume B (cm<SP>3</SP>) of a sea alga micronized material layer to mass (A) (g) when drying the micronized material, when measuring the volume B of the sea alga micronized material layer which sinks and floats in a container bottom after putting a micronized material obtained by micronizing sea algae by a wet process together with water in the container, stirring until the each micronized particle fully disperses in water, and leaving the product still at 25°C for 1 h. The ratio is calculated with a formula: a sinking volume (cm<SP>3</SP>/g)=B/(A). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a colloidal composition in which a refined product of seaweed such as kelp, seaweed, mozuku and the like is dispersed in water, a method for producing the same, and a processed food obtained using the colloidal composition. is there.

  Seaweeds such as kelp, seaweed, and mozuku are rich in minerals such as iodine, iron, calcium, magnesium, potassium, phosphorus, zinc, copper, and dietary fiber, and are extremely useful as foods. These seaweeds are collected in the sea, washed with water, dried in the sun and then cut into an appropriate size and used as food materials or as raw materials for secondary processing. By drying in the sun, the moisture in the seaweed is reduced and it becomes a useful preserved food.

  By the way, among seaweed, for example, kelp cut into an appropriate size is eaten as it is, and is used as dashi kelp, shaved kelp, or as a raw material for salt kelp. On the other hand, the seaweed powder obtained by pulverizing the dried product is used as a material for drinks, dressings and the like, for example, as it is sprinkled or mixed with water or cooking oil. In particular, when used as a drink or dressing, dispersibility is required so that the seaweed powder does not settle on the bottom of the container.

  Among seaweeds, kelp, in particular, is widely used as a dashi material because it contains aroma components and taste components. In addition, in order to enhance the convenience of dashi kelp, many seasonings containing aroma components extracted from kelp are also commercially available. As a technique for extracting aroma components from kelp, for example, in Patent Document 1, hydrous alcohol obtained by immersing kelp powder in hydrous alcohol to elute aroma components is treated with carbon dioxide in a supercritical or subcritical state. It has been proposed to recover valuable components. This document also describes that after extracting the kombu extract, the taste component is extracted with hot water from the residue (kombu).

However, since the dietary fiber contained in seaweed is generally indigestible, most of the components useful to the human body are excreted without being absorbed into the body even if seaweed is ingested. Therefore, although it is desired to increase the absorbability to the human body, in the above-mentioned document, it is not considered to increase the absorbability of the polysaccharide component constituting the kelp although the aroma component can be extracted from the kelp.
JP 2001-78705 A (Claims, paragraph 0015, etc.)

  The present invention has been made in view of such circumstances, and its purpose is to provide a seaweed component having good water dispersibility and preferably having improved absorption of an active ingredient in the human body. It is another object of the present invention to provide a colloidal composition which is dispersed in a processed food, and a processed food obtained using the colloidal composition. Another object of the present invention is to provide a useful method for producing the colloidal composition.

The disperse colloidal composition of the seaweed refined product according to the present invention that has solved the above problems is summarized in that the sedimentation volume defined by the following formula (1) is 5.0 cm ³ / g or more. Have Here, the sedimentation volume means that the seaweed is refined by a wet process and is put into a container with a sufficient amount of water so that individual contact of the refined particles is almost eliminated, and each refined product particle is sufficiently dispersed in water. The mixture was allowed to stand at 25 ° C. for 1 hour, and when the volume B (cm ³ ) of the seaweed micronized material layer that settled and floated on the bottom of the container was measured, the mass A when the micronized material was dried. It means the ratio of the volume B of the seaweed refined material layer to (g) and is calculated by the following formula.
Sedimentation volume (cm ³ / g) = B / A (1)

The colloidal composition can be produced by, for example, refining seaweed with water and dispersing it in water. You may wet-process at 50-150 degreeC before refinement | miniaturization of the said seaweed and / or after refinement | miniaturization. In this wet processing, an acid or a base can be used. As the pretreatment, the seaweed may be subjected to an aging treatment at an ice temperature or higher and 10 ° C. or lower.
The present invention also includes processed foods obtained using the colloidal composition.

  The seaweed refined product contained in the colloidal composition that satisfies the requirements specified in the present invention has high solubility or dispersibility in water, and further improves the absorbability to the human body by applying an appropriate wet treatment. It is expected to increase the intake efficiency of nutrients. By performing the wet treatment at 100 to 150 ° C. in particular, it is possible to sterilize miscellaneous bacteria adhering to seaweed.

The colloidal composition of the present invention is obtained by dispersing a seaweed refined product in water, and the sedimentation volume defined by the above formula (1) occupies 5.0 cm ³ / g or more.

  A method for producing such a colloidal composition is not particularly limited, but a preferable method is a method of wet micronization of seaweed contained in a processing vessel (hereinafter sometimes referred to as a wet micronization step). Before and / or after the crystallization step, it is preferable to perform a wet treatment at 50 to 150 ° C. (hereinafter sometimes referred to as a heat treatment step).

  First, the wet micronization process will be described in detail. The wet micronization process is a process for micronizing seaweed in a wet state, and is a process for increasing the dispersibility of the seaweed micronized product in water and increasing the sedimentation volume described later. If this step is performed particularly before the heat treatment step, seaweed is refined, so that the decomposition reaction in the heat treatment step can be promoted. On the other hand, if the wet micronization process is performed especially after the above heat treatment process, the seaweed after the decomposition process can be miniaturized and soluble components (for example, mineral, alginic acid, phosphoric acid) eluted in the solvent along with this micronization. , Glutamic acid, inosinic acid, guanylic acid, etc.) and monosaccharides, disaccharides, oligosaccharides, etc., which are decomposed from indigestible polysaccharides and eluted in a solvent, are combined with a colloidal composition of a seaweed refined dispersion. can do. In any case, when the wet micronization step and the heat treatment step are combined, it becomes a colloidal composition containing a large amount of the above monosaccharides, disaccharides, oligosaccharides, etc. It is thought that the absorption to the human body can be improved.

  The conditions when the seaweed is refined by a wet process are not particularly limited. For example, “Supermass colloider LC type (apparatus name)” manufactured by Masuko Sangyo Co., Ltd. is used as a grinder, and the rotational speed is several hundred to several thousand. What is necessary is just about rpm. At this time, if the grindstone interval is adjusted, or if the number of passes through the grinder is adjusted, the bottom volume described later can be controlled. In order to prevent the temperature during grinding from becoming too high, it is preferable to adjust the temperature by cooling to water at a constant temperature.

  Next, the heat treatment process will be described in detail. In the heat treatment step, seaweed is decomposed by wet treatment at 50 to 150 ° C. Since polysaccharides in seaweed are decomposed into structural units such as monosaccharides, disaccharides, and oligosaccharides under heat treatment conditions, the molecular weight is reduced, so that solubility or dispersibility in water is improved, Absorbability is also improved, and it is considered that it is easily digested.

  The wet treatment is performed at 50 to 150 ° C. If it is less than 50 degreeC, the decomposition | disassembly by the enzyme which seaweed itself has, and the decomposition | disassembly by the microorganisms which penetrate | invade from the outside are performed, and it is difficult to control a decomposition reaction. The wet treatment is preferably performed at 100 ° C. or higher, and if it is performed at 100 ° C. or higher, miscellaneous bacteria adhering to seaweed can be sterilized. Preferably it shall be 105 degreeC or more. However, when the temperature exceeds 150 ° C., the flavor may be impaired by decomposition of the organic component among seaweed components, and depending on the application, it is not suitable as a food.

  The treatment time in the heat treatment step is not particularly limited, and may be appropriately adjusted according to the purpose and use when using the dispersion colloidal composition of the present invention.

  The water used as the solvent may be tap water (tap water) as it is, or may be water that has been subjected to boiling treatment, membrane ion treatment, or natural spring water or deep water. The state of the solvent is not particularly limited, and may be liquid (water) or water vapor.

  In the present invention, a small amount of acid or a small amount of base can be used in the wet treatment. That is, when a small amount of acid or a small amount of base is added to the solvent, the decomposition of the seaweed is promoted, and a moderate flavor is added to the finally obtained seaweed to increase the taste.

  As the acid to be added to the solvent, acetic acid, citric acid, tartaric acid, malic acid, vinegar and the like can be used, and vinegar is particularly preferred. Examples of vinegar include grain vinegar (eg, rice vinegar, brown rice vinegar, black vinegar, sake vinegar, red vinegar, etc.), fruit vinegar (eg, apple vinegar, grape vinegar, wine vinegar, balsamic vinegar, malt vinegar, sherry). Any edible vinegar can be used such as vinegar, stone vinegar, red vinegar, fig fruit vinegar, pear vinegar, pumpkin vinegar, black bean vinegar, vinegar vinegar, etc. In general, brewed vinegar can be suitably used because it contains various organic acids. An example of the base added to the solvent is sodium bicarbonate.

  The concentration of the acid or base when adding the acid or base is not particularly limited as long as it does not inhibit the decomposition of seaweed and does not impair the flavor of seaweed.

  The order of the heat treatment step and the wet refinement step is not particularly limited, and the wet refinement step may be performed after the heat treatment step, or the heat treatment step may be performed after the wet refinement step. In addition, after performing the heat treatment step, a wet refinement step may be performed, and then the heat treatment step may be performed again. Of course, after performing the wet micronization process, a heat treatment process may be performed, and then the wet micronization process may be performed again. If necessary, the heat treatment step may be performed a plurality of times, or the wet micronization step may be performed a plurality of times. In any case, since the colloidal composition of the present invention is finally eaten, it may be sterilized by heating according to a conventional method if necessary.

  In the present invention, it is preferable to subject the seaweed to an aging treatment at an ice temperature or higher and 10 ° C. or lower as a pretreatment. By performing the aging treatment, it is considered that a part of the seaweed is decomposed by the enzyme of the seaweed itself.

  This aging treatment is preferably performed at an ice temperature or higher and 10 ° C. or lower. By carrying out at 10 degrees C or less, it is thought that decomposition | disassembly by an enzyme occurs, suppressing propagation of miscellaneous bacteria. However, if seaweed is cooled to a temperature below the ice temperature, the seaweed taste may be significantly impaired. The ice temperature is the temperature at which seaweed freezes.

  The time for performing the aging treatment is not particularly limited, and may be appropriately determined according to the use of the dispersion colloidal composition.

  Seaweed that can be used in the present invention refers to algae (spore plants) in the sea, and any of green algae, brown algae, and red algae can be used. Examples of green algae include, for example, Aosa, Aonori, Shiogusa, Hitoegusa, etc. Ogonori, Funori, Tsunomata, Kainoshi and the like. Of these seaweeds, kelp and mozuku are particularly suitable.

  As the seaweed, raw seaweed collected from the sea or dried seaweed returned with water can be used. When raw seaweed collected from the sea is used, it is preferable to remove impurities (including sand and shells) adhering to the surface by washing in advance. Moreover, although the said seaweed may be put into a processing container and processed as it is the magnitude | size extract | collected from the sea, it may cut | disconnect to a suitable magnitude | size and may be processed into it. In order to cut the seaweed, a processing container may be provided with a cutter or the like and roughly cut before the above treatment, or by using an in-line mixer to roughly cut the seaweed through a pipeline.

The colloidal composition in the present invention has a sedimentation volume of 5.0 cm ³ / g or more. Sedimentation volume refers to wet micronized seaweed that is put in a container with water, stirred until each micronized particle is sufficiently dispersed in water, and left at 25 ° C. for 1 hour. When measuring the volume B (cm ³ ) of the seaweed refined layer that floats and settles at the bottom, it means the ratio of the volume B of the seaweed refined layer to the mass A (g) when the refined product is dried. Is calculated by the following formula.
Sedimentation volume (cm ³ / g) = B / A (1)

  In the case of a dispersion in which seaweed powder (for example, kelp tea powder) known in the past is dispersed in water, the indigestible polysaccharide constituting seaweed is only mechanically crushed. The powder thus obtained has a nearly spherical shape. Therefore, even if this powder is put into water, it does not diffuse bulky and tends to deposit and settle densely at the bottom of the container.

  On the other hand, the water-insoluble portion of the colloidal composition according to the present invention is fibrillated (pulverized) by wet grinding, and has a fibrous shape with a short diameter of about several μm or less, or a branched shape. Therefore, the colloidal composition in which the seaweed refined product (seaweed ground product) is dispersed in water maintains a state in which the seaweed refined product is widely diffused and suspended in water even when left for a long time.

  In measuring the sedimentation volume, a mixture of a seaweed refined product and water in a container is stirred until each refined product particle is separated and sufficiently dispersed in water. In order to sufficiently disperse the fine particles in water, it is preferable to reduce the concentration of the fine particles in the mixed solution, and it is preferable to dilute with water so that the concentration of the fine particles is about 1% by mass or less. .

  The sedimentation volume is calculated by measuring the volume of the seaweed refinement layer that settles and floats under its own weight at the bottom of the container, after sufficiently stirring the mixed solution. Since it is shown by the volume of the seaweed refined product layer relative to the mass of the seaweed refined product, it can be calculated as a physical property value unique to the seaweed refined product, regardless of the concentration of the seaweed refined product. The sedimentation volume measured in this way is used as an index representing the characteristics of the additive when evaluating the degree of change in physical properties (for example, strength and texture) when the seaweed refined product of the present invention is put in a certain system. be able to.

In the present invention, the seaweed refined product layer refers to a portion indicated by X in FIG. That is, in FIG. 1, 1 is a cylindrical container. In this container, the seaweed refined product is placed in a container together with water and stirred until each refined product particle is sufficiently separated and dispersed in water. After leaving still for 1 hour, the volume B (cm < ³ >) of the seaweed refined substance layer which settles and floats on the container bottom part is measured.

It is preferable to use a graduated cylinder as the container because the volume of the seaweed refined material layer that settles and floats on the bottom of the container can be easily measured. In the case of a dispersion in which seaweed powder (for example, kelp tea powder) that has been conventionally known is dispersed in water, as shown in FIG. 1 (b), the seaweed powder is densely attached to the bottom of the container. Due to the deposition, the sinking volume is less than 5.0 cm ³ / g.

The dispersive colloidal composition of the present invention only needs to occupy a sedimentation volume of 5.0 cm ³ / g or more, and its size depends on the physical properties of the seaweed refined product in a certain system. You just have to decide. For example, when the colloidal composition is mixed with wheat flour or buckwheat flour and used as a raw material for noodles, the use of a colloidal composition having a sedimentation volume of 50 cm ³ / g or more makes the noodles firm. The texture can be improved. On the other hand, when used as a material for kneaded foods, fried eggs, hamburgers, etc., a unique texture can be obtained by using a colloidal composition having a sedimentation volume of 20 cm ³ / g or more. In addition, even if the colloidal composition of the present invention is allowed to stand for 2 hours under the same conditions as described above, the sedimentation hardly proceeds any further, and the volume of the substantially suspended sedimentation state is maintained.

  The colloidal composition of the present invention can be used as an additive such as a seasoning, food, or beverage.

  As a seasoning additive, the colloidal composition can be mixed with, for example, cut sardine, sesame, bonito powder, salt, spices, etc. and used as an instant soup, or put in dressing or curry. Also good.

  As a food additive, the colloidal composition is mixed with, for example, wheat flour or buckwheat flour, for example, noodles (for example, udon, buckwheat, somen, cold wheat, Chinese noodles, pasta, pho, etc.) and confectionery (for example, In addition, Japanese confectionery can be used as ingredients such as buns, dumplings, and sheep candy, and Western confectionery can be used as a material for cakes, castellas, cookies, pudding, jelly, etc.). Further, it may be used as a material for kneaded foods (for example, kamaboko, hanpen, jakoten, ginger tempura, squid tempura, chikuwa, sausage, etc.), fried egg, hamburger or the like.

  As an additive for beverages, the above colloidal composition may be mixed with various seasonings, for example, seaweed drink (eg, mozuku juice), miso soup, soup, etc.

  Hereinafter, the present invention will be described in more detail with reference to examples. However, the following examples are not intended to limit the present invention, and may be implemented with appropriate modifications within a range that can meet the purpose described above and below. These are all possible and are within the scope of the present invention.

[Experiment 1]
Example 1
1 kg of seaweed (Konbu), which has been washed thoroughly with water and other contaminants such as sand removed, is used with “Supermass colloider LC. Type (device name)” manufactured by Masuko Sangyo Co., Ltd. As a result, a colloidal composition in which the seaweed refined material was dispersed in water was obtained. In addition, it controlled so that the temperature at the time of grinding might not become 50 degreeC or more at this time.

Example 2
1 kg of seaweed (kombu), which has been thoroughly washed and freed of sand and other contaminants, is placed in a processing vessel, and the seaweed that has been heat-treated at 80 ° C. for 3 hours using 1 L of water as a solvent, A colloidal composition in which a seaweed refined product was dispersed in water was obtained by wet grinding using a “Roider LC. Type (device name)” with a rotational speed of 1800 rpm and a grinding wheel interval of 20 μm. In addition, it controlled so that the temperature at the time of grinding might not become 50 degreeC or more at this time.

Example 3
In Example 2 above, the colloidal composition was used under the same conditions, except that 1 kg of seaweed (kombu) that had been sufficiently washed to remove foreign substances such as sand was heat-treated at 4 ° C. for 24 hours. Got.

Example 4
1 kg of seaweed (kombu) from which impurities such as sand were sufficiently washed to remove sand was placed in a treatment container, and heat-treated at 130 ° C. for 2 hours using 1 L of water as a solvent to hydrolyze the polysaccharides in the seaweed. Hydrolyzed seaweeds are wet-ground using "Supermass colloider LC. Type (device name)" manufactured by Masuko Sangyo Co., Ltd. with a rotation speed of 1800 rpm and a grinding stone interval of 20 μm, and the seaweed refined matter is dispersed in water. A colloidal composition was obtained. In addition, it controlled so that the temperature at the time of grinding might not become 50 degreeC or more at this time.

Example 5
In Example 4 above, the colloidal composition was used under the same conditions, except that 1 kg of seaweed (kombu) that had been sufficiently washed to remove sand and other contaminants was subjected to an aging treatment at 3 ° C. for 12 hours. Got.

Comparative Example 1
10g of sun-dried seaweed (kombu) is dry-ground for 40 seconds at a rotation speed of about 20000 rpm using a mill "SKL-A250 (product number)" manufactured by Tiger Thermos Co., Ltd., and the resulting seaweed powder is dispersed in water. A dispersion was prepared.

Comparative Example 2
100 g of seaweed (kombu) that has been thoroughly washed to remove sand and other contaminants is frozen using liquid nitrogen at a peripheral speed of 100 m / sec using a “Lindex Mill (device name)” manufactured by Hosokawa Micron. The dispersion was prepared by pulverizing and dispersing the obtained seaweed powder in water.

  Next, a liquid chromatograph of the obtained colloidal composition or the dispersion was measured. As a result, when the dispersions obtained in Comparative Example 1 and Comparative Example 2 were measured, few molecular weight peaks indicating the presence of monosaccharides, disaccharides, and oligosaccharides were observed. In contrast, when the colloidal compositions obtained in Examples 2 to 5 were measured, a molecular weight peak indicating the presence of monosaccharides, disaccharides, and oligosaccharides was also strongly observed. From the above results, it is understood that when wet treatment (heat treatment) is performed at 50 to 150 ° C., polysaccharides in seaweed can be decomposed and the molecular weight is reduced. Therefore, it is considered that the absorbability to the human body is also improved.

  Moreover, after stirring the obtained colloidal composition or the dispersion liquid until each micronized particle was sufficiently dispersed in water, it was placed in a 100 mL measuring cylinder and allowed to stand at 25 ° C. for 1 hour. After standing, the volume B of the seaweed refined product layer or seaweed powder layer suspended and settled at the bottom of the graduated cylinder was measured. Next, the supernatant liquid in the graduated cylinder (upper layer of the seaweed refined product layer) is removed, the moisture is removed from the seaweed refined product layer, and the mass A of the seaweed refined product is measured. Was measured.

As a result, the sedimentation volume of the dispersion obtained in Comparative Example 1 was 1.8 cm ³ / g, and the sedimentation volume of the dispersion obtained in Comparative Example 2 was 3.9 cm ³ / g. In contrast, the colloidal composition obtained in Example 1 has a sedimentation volume of 15.3 cm ³ / g, the colloidal composition obtained in Example 2 has a sedimentation volume of 25.3 cm ³ / g, The colloidal composition obtained in Example 3 has a sedimentation volume of 34.6 cm ³ / g, and the colloidal composition obtained in Example 4 has a sedimentation volume of 51.8 cm ³ / g. The settlement volume of the colloidal composition obtained in Example 5 was 63.4 cm ³ / g. From these results, it is understood that the seaweed refined product contained in the colloidal composition of the present invention is bulky and dispersed even in water.

[Experiment 2]
1 kg of seaweed (mozuku) from which impurities such as sand were sufficiently washed to remove sand were put in a processing vessel, and 0.5 L of water was used as a solvent and heat treated at 120 ° C. for 2 hours to hydrolyze the polysaccharides in seaweed. . Hydrolyzed seaweeds are wet-ground using "Supermass colloider LC. Type (device name)" manufactured by Masuko Sangyo Co., Ltd. with a rotation speed of 1800 rpm and a grinding stone interval of 20 μm, and the seaweed refined matter is dispersed in water. A colloidal composition was obtained. In addition, it controlled so that the temperature at the time of grinding might not become 50 degreeC or more at this time.

The obtained colloidal composition was placed in a 100 mL graduated cylinder, and the sedimentation volume was measured under the same conditions as in Example 1. As a result, the sedimentation volume was 78 cm ³ / g.

(A) of FIG. 1 is a schematic diagram which shows a mode when measuring the volume of a seaweed refined substance layer, (b) is a schematic diagram which shows a mode when measuring the volume of a seaweed powder layer.

Explanation of symbols

  1 Cylindrical container

Claims (7)

A colloidal composition in which a wet micronized seaweed micronized product is dispersed in water,
A dispersion colloidal composition having a sedimentation volume defined by the following formula of 5.0 cm ³ / g or more.
However, the sedimentation volume means that the refined product obtained by wet micronizing seaweed is put in a container together with water, stirred until each refined product particle is sufficiently dispersed in water, and this is allowed to stand at 25 ° C. for 1 hour. When the volume B (cm ³ ) of the seaweed refined product layer that settles and floats on the bottom of the container is measured, the ratio of the volume B of the seaweed refined product layer to the mass A (g) when the refined product is dried is Meaning and calculated by the following formula.
Sedimentation volume (cm ³ / g) = B / A   A processed food obtained using the colloidal composition according to claim 1.   2. A method for producing a colloidal dispersion composition, wherein the seaweed is refined by a wet process and dispersed in water to obtain the colloidal composition according to claim 1.   The manufacturing method of Claim 3 which wet-processes at 50-150 degreeC before refinement | miniaturization of the said seaweed and / or after refinement | miniaturization.   The manufacturing method of Claim 4 which performs the said wet processing at 100-150 degreeC.   The production method according to claim 4 or 5, wherein an acid or a base is used in the wet treatment.   The production method according to any one of claims 3 to 6, wherein the seaweed is subjected to an aging treatment as a pretreatment at an ice temperature or higher and 10 ° C or lower.

Images