JPS6324865A - Granular paste and production thereof - Google Patents

Abstract

PURPOSE:To obtain granular paste suitable as a stabilizer, forming no undissolved lump of flour, having instant solubility in water, readily handleable, by spraying water upon fluidized water-soluble paste granules of powder and drying. CONSTITUTION:A water-soluble powder paste such as xanthan gum, hydroxypropyl cellulose, etc., fluidized by warm water, etc., is sprayed with water and optionally an alcohol or another water-soluble organic solvent. Then the paste is dried to give the aimed granular paste which has particle size wherein the whole amount passes through a sieve of 12 meshes and remains in a sieve of 100 meshes and shows apparent volume >=1.3 the apparent specific volume of raw material of paste powder.

Description

Detailed Description of the Invention 11 and 11 Technical Field The present invention relates to a granular paste that is immediately soluble in water and a method for producing the same.

Traditionally, water-soluble powder pastes (especially edible ones) have been used as stabilizers for the purpose of stabilizing dispersion systems, gelling, thickening, forming films, improving texture, etc., and are used in C1 livestock processed products and marine processed products. It is widely used not only in the food industry, but also in other industries such as cosmetics, strings, paper manufacturing, and pharmaceuticals.

However, when water-soluble powder paste is dissolved in water, it forms a so-called lump when dissolved by ordinary stirring, so there are various problems when using it in product processing, and it takes time to dissolve the paste. (e.g., it takes a lot of water, the inability to make a highly concentrated solution of glue, etc.) Here, mamako means that when powdered glue is dissolved in water, only the particles that come into contact with water (particles in contact with water) swell and become highly viscous. This refers to a lump that occurs when contact with the substance is significantly inhibited.

91. In order to prevent the formation of porridges, for example, a method of increasing the solubility of the paste is to sieve the powdered paste to remove fine particles and coarse particles and make the particle size uniform to some extent. It has been.

In addition, by adding foaming agents, inorganic salts, etc., it is possible to prevent the formation of mako and increase the solubility of the paste. Coating with alcohol, etc.) is also used to prevent the formation of mako and shorten the dissolution time.

However, the above method of making the particles of the powdered glue uniform to some extent is not an essential solution to preventing the formation of lumps, and the method of adding foaming agents and inorganic salts does not provide a substantial solution to preventing the formation of bulges. As a result, a new problem arises in that the viscosity of the glue solution decreases.Furthermore, the method of coating the powdered glue with another glue that does not easily cause lumps may inhibit the properties of the main component (the glue that tends to cause lumps). However, this method has problems such as fluctuations in the viscosity of the glue, and in any case, it has not been effective as a method for preventing or eliminating the formation of lumps.

To address these five problems, the present inventors first used a binder between the particles of a water-soluble powder paste (however, the viscosity of a 5% aqueous solution (at 20°C) was 1000 centivoise or more). ), and the manufacturing method thereof includes adding a binder to fluidized water-soluble powder paste particles (however, the 5
% aqueous solution (viscosity (at 20°C) is 1000 centiboise or more) is sprayed and then dried to obtain granules by crosslinking particles of water-soluble powder paste with a binder. proposed a method (Special Irl 1986-1994)
See the specification of No. 421, hereinafter referred to as the "prior invention". ).

11 IH! -1 The present invention was completed by discovering that even when water is used as a binder in the production process of the above granular paste, the same granular paste as in the prior invention can be obtained. .

Therefore, the granular paste according to the present invention consists of particles granulated by spraying water on a water-soluble powder paste, and is characterized by having the following properties.

(a) The grain surface must be such that substantially all of the grain passes through 12 mesh I (JIS standard) and a grain remains on a 100 mesh sieve (JIS standard 625).

(b) The apparent specific volume of the paste powder raw material should be at least 1.3 times the specific volume.

The present invention also relates to a method for producing the above-mentioned granular paste.

That is, the method for producing a granular paste according to the present invention involves spraying water onto fluidized water-soluble powder paste particles, drying them, and then drying them.
It is characterized by obtaining granules having the following properties.

(a) The grain surface must pass through a 12-mesh sieve (JIS standard) with substantially all grains and remain substantially clean on a 100-mesh sieve (JISM rating).

(0) The apparent specific volume of the paste powder raw material should be at least 1.3 times the specific volume.

Effects As described above, the granular paste according to the present invention is a unit granule in which particles of a water-soluble powder paste are bonded by water, and has the properties described above.

Therefore, like the prior invention, the above-mentioned problems of the conventional water-soluble powder pastes are solved, and the invention also has the following advantages.

(b) It does not form a lump and is soluble in water.

Conventional water-soluble granular pastes usually produce lumps when dissolved in water by normal stirring;
Various methods have been used to prevent or eliminate the formation of mamako, but none of the methods has been a solution. However, since the granular paste of the present invention is made by bonding the particles of the granular paste with water,
No lumps were formed and the solubility in water was significantly improved.

(b) The original properties of the granular paste are not substantially changed.

In order to prevent mako formation, the conventional method was to coat the powdered glue with another granular paste that is less likely to cause mako, but the paste obtained in this way does not have the inherent properties of the glue. There were disadvantages in that the viscosity of the glue was lost and the viscosity of the glue also varied significantly.

On the other hand, since the granular paste of the present invention uses water instead of a binder (the water-soluble raw material powder is somewhat dissolved by the sprayed water, it functions as a binder). ), the product granular paste retains the original properties of the raw powder paste without substantially impairing it.

Therefore, it can be said that the granular paste according to the present invention can be used for the original purpose of the raw powder paste (for example, as a stabilizer).

(c) Easy to handle.

Conventional water-soluble powder pastes have problems with scattering properties, fluidity, and filling properties, and also have unfavorable physical properties such as not caking during storage.

However, the granular paste of the present invention, which is obtained by granulating a water-soluble powder paste, has improved scattering and adhesion properties, has no agglomeration, and has excellent storage stability, and also has good fluidity. It is easy to handle because it can be measured using an appropriate volume a method.

11 Blood bean h1'' Granular square paste The granular paste of the present invention is "consisting of particles granulated by spraying water on a water-soluble powder paste." The "water-soluble powder paste" in this case is one that can be used for purposes such as stabilizing, gelling, thickening, film formation, and improving texture of a dispersion system, or as a binder. Such water-soluble powder pastes include, for example, natural products such as pectin, giraffe gum, locust pea gum, guar gum, gum arabic, sodium alginate, human O-oxypyl cellulose, methyl cellulose,
Cellulose derivatives such as carboxymethyl cell sodium and polyvinyl vinyl
There are chemically synthesized products such as lydone and sodium polyacrylate. The powdered paste used as a raw material for the granular paste of the present invention may be composed of the above-mentioned single component or any combination of two or more, or may be a mixture of these and other components as appropriate. (For example, as an animal protein improver,
(Nippon Colloid Co., Ltd.) etc.)
It may consist of.

When "spraying water", the type of water, the size of the water droplets, and other parameters may be arbitrary such that the particles of the raw powder paste aggregate to obtain the desired granular characteristics (details will be described later). It's possible. The water may be an alcohol or other water-soluble solvent (preferably an easily volatile solvent, if necessary) or, if necessary, an inorganic salt or other component dissolved therein in the powdered paste product. (Even in that case, in keeping with the spirit of the present invention of not using a binder, the water in which these substances are dissolved must have a viscosity that is not much different from that of the water itself.) A general or typical embodiment of the invention is to use regular water, ie, tap water, distilled water, purified water, etc. (more on drop piles and amounts below).

The powdery paste according to the present invention has a particle size such that substantially all of it passes through a 12-mesh sieve and substantially all of it remains on a 100-mesh sieve (r5j mesh is J
(according to IS standards).

Further, the apparent specific volume is at least about 1.3 times, preferably about 1.5 times or more, the specific volume of the paste powder raw material. Here, the apparent specific volume refers to the sparsest (looseness) apparent specific volume, and the commonly used apparent volume refers to the reciprocal of specific gravity, that is, the volume occupied by particles of unit mass filled, cc / Refers to something expressed in units of 9. This, in turn, is one means of examining particle porosity in the present invention. In addition, the measurement of specific volume is based on JISK.
5101 method, and specifically, using a suitable device, such as a powder dester (Hosokawa Micron ■).
It can be done with The paste of the present invention has a specific volume that is 1.3 times or more greater than this apparent volume. This suggests that, compared to the paste powder raw material, the paste of the present invention has increased interparticle voids, and also suggests that it has a porous structure.

Therefore, water permeates inside the particles faster (improves solubility), and also prevents the formation of lumps (
(See reference example below).

￥J construction of granular paste The granular paste of the present invention is similar to the method disclosed in the earlier invention, in which ``water is sprayed onto a fluidized water-soluble powder paste and then dried to obtain granules.'' It can be manufactured according to the method of

Such a method can be carried out by making the raw material powder into an initial layer using an air current, and then granulating it by spraying a liquid thereon, and is usually carried out using a fluidized bed granulator.

One embodiment thereof is as follows.

First, after putting the water-soluble powder paste into a fluidized bed granulator (
At this time, a dispersant may be added as required), and hot air heated at 50° C. to 100° C. is passed from below to fluidize the powder paste. Next, after spraying water (preferably purified water) onto the fluidized bed of the powdered paste formed here, granules 1 can be obtained by drying.

In another embodiment, a water-soluble powder paste is put into a fluidized bed granulator, the powder paste is fluidized by blowing cold air from below, water is sprayed thereon, and then the cold air is switched to hot air. The granular paste of the present invention can also be obtained by this method.

The water-soluble powder paste and water used here are as described above, but the amount of water used and the spraying conditions are as follows. The amount of water used is preferably changed depending on the type of water-soluble powder paste used as a raw material and the particle size of the granular paste to be obtained.
50% (W/W>) is preferable. In the case of the Uniblat fluidized bed granulator (small granulator) used in the examples of the present invention, the spraying conditions are a spraying rate of 10 to 50al!/min, and a spraying pressure of 0.
．． It is usually carried out at 5 to 2 g/Cm2. In addition,
It goes without saying that such spray speed and spray pressure can be adjusted using a fluidized bed or a granulating device, and should be appropriately selected depending on the size of the device, the size of the granulated material, etc.

In this way, according to the method for producing granular paste of the present invention, water is sprayed on the fluidized powder paste to bond the particles of the powder paste, and then hot air is passed through this to form porous adhesives. Aggregates with a qualitative structure are formed (-order aggregates),
Then, the granular paste of the present invention can be obtained by repeating the process of forming a powder paste binder and forming an aggregate, in which the next aggregate is combined to form a larger aggregate. Presumed.

The granular paste of the present invention thus obtained is l! ! ! It is conceptually understood that each particle has a porous structure formed by adhesion on the surface of a primary particle or a secondary particle (including secondary particles). Therefore, the granular paste according to the present invention does not form lumps, but this is because the paste according to the present invention has a smaller surface area per unit weight than the powdered paste that is the raw material. In addition, in the granular paste according to the present invention, each particle has a porous structure.Therefore, water permeates into the inside of the particles very quickly (that is, the solubility is improved). ing).

Example 1 Using UNIGLATT fluidized bed granulation II (Yonin Kawara Seisakusho), 500 g of xanthan gum (80
Metshu Zentsu, Dainippon Pharmaceutical ■) was fluidized with warm air (90°C), and then 150 g of purified water was sprayed at a speed of 30 m.
/min, spraying pressure 1.25 under the conditions of 9/C12,
The granular paste was then granulated by drying.

Example 2 Using the same equipment as in Example 1, human Oxib O-bil cellulose (L type, hereinafter referred to as HPC-L) 500!7
(100 mesh bus 77%, Japan 4 speed @J) with warm air (
After fluidizing it at 90°C, 80g of purified water was sprayed at a rate of 20d/min and a spraying pressure of 1.25N! ? The granular paste was granulated by spraying under the condition of /cm2 and then drying.

Example 3 Using the same equipment as in Examples 1 and 2, carboxymedylvinyl chloride sodium (hereinafter referred to as CMC-Na) was prepared.
4009 (all 100 mesh, Daiichi Kogyo Seiyaku flavor) was fluidized with warm air (90°C), and then 100% purified water was added to it.
g to spray rate [a300Id/min, spray pressure 1.25 to 9/
A granular paste was granulated by spraying under Cg12 conditions and then drying.

Reference Example 1 According to the following dissolution method, the dissolution time of a conventional powder paste and a granular paste of the present invention was measured.

200cc of purified water in a 700cc stainless steel beaker
was added, and the sample was added while stirring (four stirring blades) at a constant speed (approximately 500 rDIl). Then, the time required for the sample to be completely dispersed and dissolved to become a viscous aqueous solution was measured.

The results are shown in Table 1.

All of the granular pastes were sieved through a 100-mesh sieve.

*Umbrella Dissolution time is the average value of three measurements.

From this result, it can be said that the paste of the present invention has significantly improved solubility compared to conventional pastes.

Reference Example 2 The paste of the present invention obtained in Examples 1.2 and 3 was applied to 12 mesh<1oooμ) and 100 mesh (149μ).
) The particle size when sieved was examined.

Then, the distribution of particles of the glue was investigated. The results are shown in Table 2.

The 12-mesh residue can be crushed using a power mill using a 1.01+111φ screen to obtain a residue that passes through the 12-mesh sieve and remains on the 100-mesh sieve.

Reference Example 3 The physical properties of Material 11 of the present invention and its raw material powder were compared. As for physical properties, cumulative particle size and apparent specific volume @a (cc
/g) was investigated. 11) The specific volume of the sieve was measured using a powder tester (Hosokawamiku O-Ken). Also,
The cumulative particle size was measured using the above-mentioned Powder Destar by vibrating for 3 minutes at 4 rheostat scales.

The results are shown in Table 13.

From these results, the apparent specific volume of the paste of the present invention is 1.5 times or more that of the raw material, suggesting that the paste of the present invention has a porous structure. . Therefore, as shown in Reference Example 1, the solubility is significantly improved.

Claims (1)

[Scope of Claims] 1. A granular paste comprising particles granulated by spraying water on a water-soluble powder paste, characterized by having the following properties: (a) The particle size is such that substantially the entire amount passes through a 12 mesh sieve (JIS standard) and substantially the entire amount remains on a 100 mesh sieve (JIS standard). (b) The apparent specific volume is at least 1.3 times the apparent specific volume of the paste powder raw material. 2. A method for producing a granular paste, which comprises spraying water on fluidized water-soluble powder paste particles and then drying them to obtain granules having the following properties. (a) The particle size is such that substantially the entire amount passes through a 12 mesh sieve (JIS standard) and substantially the entire amount remains on a 100 mesh sieve (JIS standard). (b) The apparent specific volume is at least 1.3 times the apparent specific volume of the paste powder raw material.