JP6189567B1 - Method for producing protein-containing granules - Google Patents

Abstract

The present invention provides a novel technique for increasing the solubility of protein-containing foods in drinking solvents. When a powder raw material containing a first protein is granulated by fluidized bed granulation to produce a protein-containing granule, the powder raw material contains a second protein and / or a hydrolyzate thereof. Spray the liquid and granulate. [Selection figure] None

Description

  The present invention relates to a method for producing a granule containing a protein. In particular, the present invention relates to a method for producing granules containing protein at a high content and dispersed in water or the like.

In the past, protein-containing powders have been developed as dietary supplements, especially for athletes and people with high exercise loads.
Such protein-containing powders have poor water wettability and have the problem of forming “mamako” (dama) without being easily dissolved / dispersed in water. It is difficult to completely dissolve and disperse. This problem is due to the influence of the protein powder raw material as the main component. When the protein content becomes high, the solubility of the protein-containing powder in water or the like becomes more difficult.

As a technique for improving the solubility of protein-containing powder in water or the like, it is known to add an emulsifier or a saccharide.
For example, Patent Document 1 describes that the use of a polyglycerin fatty acid ester having lauric acid having an HLB of 13 to 18 as a constituent fatty acid as whey protein-containing granules can suppress the occurrence of lumps. Has been. Patent Document 2 discloses that by adding a carbohydrate such as oligosaccharide to whey protein, the water absorption is improved, and the “mamako” state when mixed with liquid food is eliminated in a short time. Furthermore, it is described that water absorption and dispersibility are further improved by making whey protein into granules.

International Publication No. 2007/123113 Pamphlet JP 2006-149371 A

This invention makes it a subject to provide the novel technique which improves the solubility to the drinking solvent of a protein containing foodstuff.
In particular, it is an object to provide a technique that contributes to enhancing the solubility of protein-containing foods in water without reducing the protein content in foods, such as increasing the amount of sugar or emulsifier used.

  As a result of intensive research and development, the inventors of the present invention produce a protein-containing granule by granulating a protein-containing powder material, and the powder material contains protein and / or a hydrolyzate thereof. Granulation by spraying a spray solution, that is, protein-containing granules having high solubility in water by using protein and / or a hydrolyzate thereof as a binder (binder) of powder raw material containing protein Was found to be obtained.

The present invention for solving the above problems is a method for producing a protein-containing granule by granulating a powder raw material containing a first protein by fluidized bed granulation, wherein the powder raw material contains a second protein and / or its protein It is characterized by spraying a spray liquid containing a hydrolyzate and granulating.
According to the method for producing a protein-containing granule of the present invention, the solubility of the protein-containing granule in water can be enhanced.

In a preferred embodiment of the present invention, the first protein is one or more selected from milk protein and soybean protein.
In a preferred embodiment of the present invention, the second protein is one or more selected from whey protein and soybean protein.
Milk protein and soybean protein are suitable for use in the present invention because they are widely used as proteins for drinking after being dissolved in a drinking solvent such as water.
Moreover, the solubility to the powder raw material in water can be improved by using 1 or more types selected from whey protein and soybean protein as 2nd protein.

In a preferred embodiment of the present invention, the hydrolyzate is at least one selected from a hydrolyzate of whey protein and a hydrolyzate of soybean protein.
By using one or more selected from the hydrolyzate of whey protein and the hydrolyzate of soybean protein as the second protein, the solubility of the protein-containing granules in water can be increased.

In a preferred form of the invention, the origin of the first protein and the second protein and / or its hydrolyzate is the same.
By setting it as such a form, it becomes easy to reduce the number of raw materials used for a product. Thereby, for example, it is easy to deal with allergies, the raw material display can be simplified, or the manufacturing cost can be suppressed.

In the preferable form of this invention, the said spray liquid contains 3-25 mass% of said 2nd protein and / or its hydrolyzate.
By setting the concentration of the second protein and / or the hydrolyzate thereof in the spray liquid within the above range, a good solubility effect of the protein-containing granules can be obtained, while the viscosity of the spray liquid is sprayed. It is possible to make the range suitable for.

In a preferred embodiment of the present invention, an emulsifier is further added to at least one of the powder raw material and the spray liquid.
By setting it as such a form, the solubility of a protein containing granule can further be improved.

In a preferred embodiment of the present invention, the protein-containing granule contains 50% by mass or more of protein.
The production method of the present invention is useful in that, in the production of granules containing protein at a high content rate, the solubility can be enhanced while reducing the content of raw materials other than protein as much as possible.

  The protein-containing granule of the present invention is produced by the production method of the present invention.

According to the method for producing a protein-containing granule of the present invention, the solubility of the protein-containing granule in water can be enhanced. In particular, the solubility of the protein-containing granules in water can be enhanced without reducing the protein content in the protein-containing granules.
Therefore, the production method of the present invention is suitable for the production of a dietary supplement containing 50% by mass or more of protein.

The method for producing a protein-containing granule of the present invention is a method of granulating a powder raw material containing a first protein by fluidized bed granulation. In the production method of the present invention, the powder raw material is granulated by spraying a spray solution containing the second protein and / or a hydrolyzate thereof.
Hereinafter, the raw material used for the manufacturing method of this invention and the process included in a manufacturing method are demonstrated.

(1) Powder raw material containing the first protein Examples of the first protein include animal-derived proteins such as milk protein and egg protein, and plant-derived proteins such as soybean protein and pea protein. Examples of milk proteins include protein components such as whey and casein.
The total protein content in the powder raw material is preferably 60% by mass or more, more preferably 70% by mass or more. This is because such a powder raw material has a particular solubility problem.
Examples of the powder material containing whey protein include WPC (whey protein concentrate, protein content is 75 to 85% by mass) and WPI (whey protein isolate, protein content is 85% by mass or more).
Examples of the powder raw material containing casein protein include raw materials mainly composed of salt of casein protein (calcium salt, sodium salt, etc.) obtained by neutralizing casein curd obtained by separating skim milk.
Moreover, powdered milk and skim milk powder are mentioned as a powder raw material containing whey protein and casein protein.
Examples of the powder raw material containing soy protein include concentrated soy protein (protein content is 60 to 85% by mass) and separated soy protein (protein content is 85% by mass or more).
Since these powder raw materials are commercially available, they can be used as appropriate.

(2) Spray solution containing second protein and / or hydrolyzate thereof As the second protein, for example, those described above as the first protein can be used.
As the second protein, whey protein that is milk protein, soybean protein that is plant protein, and hydrolysates thereof are particularly preferably used.
The second protein and / or the hydrolyzate thereof may be the same as or different from the first protein, but by using a protein having the same origin as the first protein, the raw material can be reduced. This makes it easy to deal with allergies, simplifies the display of raw materials, or increases the production efficiency.

  Moreover, about at least a part of the raw material containing the second protein when preparing the spray solution containing the second protein and / or a hydrolyzate thereof, the same as the powder raw material containing the first protein, It is preferable from the viewpoint of production efficiency, for example, the number of raw materials per product can be relatively reduced.

As the solvent used for the preparation of the spray liquid, water is preferable. The protein content in the spray liquid is preferably 3 to 25% by mass, more preferably 3.5 to 20% by mass, and particularly preferably 4 to 15% by mass. By setting it as such a range, it can be set as the viscous spray liquid which is easy to spray, and the effect of this invention can also be acquired.
4 to 25% by mass, preferably 5 to 22% by mass of a raw material selected from WPC, WPI, concentrated soy protein, separated soy protein, and a hydrolyzate obtained by hydrolyzing these protein materials Is mentioned.
Moreover, the form which contains 0.5-5 mass% of sugars, such as sugar, is also preferably mentioned by the spray liquid.

(4) Arbitrary component An arbitrary component can be added to a powder raw material and / or a spray liquid.
For example, as a binder (binder), in addition to the above-mentioned second protein and / or its hydrolyzate, sugars or sugar alcohols conventionally used, starch and its decomposed products, thickening polysaccharides and gums, Cellulose derivatives, synthetic polymers and the like can be used. Thereby, solubility can be improved.

Moreover, an emulsifier can also be added. Although the kind of emulsifier is not specifically limited, the emulsifier generally used in the range which does not inhibit the objective of this invention can be used. For example, lecithin, glycerin fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, polyglycerin fatty acid ester, polyglycerin condensed ricinoleic acid ester, propylene glycol fatty acid ester, and organic acid monoglyceride may be used. You may combine 2 or more types. Thereby, solubility can be improved.
In this case, the content of the emulsifier is added so that the content in the powder raw material is preferably 0.01 to 5% by mass, more preferably 0.1 to 2.5% by mass.
However, the emulsifier may be added to either the powder raw material or the spray liquid, or may be added separately to both.
When adding an emulsifier to a spray liquid, it adds so that content of the emulsifier in a spray liquid becomes 0.05-50 mass% preferably, More preferably, it is 0.2-30 mass%.

  Moreover, the protein-containing granule of the present invention can contain other components according to its use. For example, sugars including saccharides and dietary fiber, acidulants and sweeteners, thickening polysaccharides and gums, minerals, vitamins, amino acids, other in vivo functional ingredients, flavors and the like can be added as appropriate.

  The content of the optional component is preferably limited so that the protein content in the produced protein-containing granule is preferably 50% by mass or more, more preferably 70% by mass or more, more preferably 80% by mass or more. .

(5) Production method of protein-containing granule In the production method of the present invention, in the granulation of the powder raw material, the above-mentioned spray solution is sprayed.
As a combination of the powder raw material and the spray liquid, for example, the following is preferable.
As a powder raw material containing the first protein, a powder raw material selected from WPI containing Whey protein, WPC, and a raw material containing casein protein is used, and as a spray liquid containing the second protein, WPI containing Whey protein, WPC, etc. Preferred is a form using an aqueous solution and / or dispersion of a raw material selected from these raw materials and hydrolysates obtained by subjecting such raw materials to hydrolysis treatment.
Moreover, the isolation | separation soybean protein is used as a powder raw material containing 1st protein, and the aqueous solution and / or dispersion liquid of the raw material chosen from isolation | separation soybean protein and its hydrolyzate are used as a spray liquid containing a 2nd protein. A form is mentioned preferably.
In addition, isolated soy protein is used as the powder raw material containing the first protein, and a spray solution containing the second protein is used as a raw material such as WPI and WPC containing whey protein, and such raw material is subjected to hydrolysis treatment. A form using an aqueous solution and / or dispersion of a raw material selected from the hydrolysates obtained;
As a powder raw material containing the first protein, a powder raw material selected from raw materials containing WPI, WPC and casein protein containing whey protein is used, and as a spray liquid containing the second protein, separated soy protein and its hydrolysis The form using the aqueous solution and / or dispersion liquid of the raw material chosen from a thing is also mentioned.

Granulation is performed by fluidized bed granulation. Fluidized bed granulation can be performed by fluidizing a powder raw material using a commonly used fluidized bed granulating apparatus and spraying a spray liquid thereon.
The supply amount of the second protein and / or the hydrolyzate thereof by spraying the spray liquid to the first protein is preferably 0.1 to 15% by mass, more preferably 0.5 to 10% by mass, particularly Preferably it is 1-7 mass%.
Further, other granulation conditions may be any conditions as long as the particles containing the powder raw material are aggregated and associated through the second protein contained in the spray solution, and dried and granulated. It is possible to adjust by the condition setting normally performed in the grain.

(5) Protein-containing granule The protein-containing granule of the present invention is produced by the production method described above.
The protein content in the protein-containing granule of the present invention is preferably 50% by mass or more, more preferably 70% by mass or more, more preferably 80% by mass or more.
The emulsifier content is preferably 2.5% by mass or less.
In addition, as shown in the Example mentioned later, since the improvement of solubility is obtained even when the 1st protein and the 2nd protein are made the same, the protein containing granule of this invention cannot be specified by a composition. It is considered to have a characteristic three-dimensional structure.
The protein-containing granule of the present invention can be drunk after being dissolved in a drinking solvent such as water or milk.

  Hereinafter, the present invention will be described in more detail with reference to examples.

<Examples 1-3>
Granules containing the proteins of Examples 1 to 3 were produced according to the charged amounts shown in Table 1 (% by mass, the same applies hereinafter).
As a powder raw material containing the first protein, a whey protein concentrate (protein content: 75% by mass) was used.
As the spray solution containing the second protein, a 21% by mass, 10% by mass, 5% by mass aqueous solution and / or dispersion of the whey protein concentrate was used.
Using the powder raw material and the prepared spray liquid, granulation was performed using a fluidized bed granulator.

<Comparative Example 1>
The granule containing the protein of Comparative Example 1 contained 3.8% of WPC added to the spray solution in Example 1 as a powder raw material, and an aqueous solution prepared to have a sugar concentration equivalent to that of the Example was used as the spray solution. Except for the above, it was produced in the same manner as in Example 1.

In order to verify the effect of granulation using a spray solution containing protein, the granules of Examples and Comparative Examples obtained were subjected to a solubility test by the following method.
Add 20 g of granules to 200 ml of water at 4 ° C., attach a propeller-type stirring blade to a stirrer (IWAKI STIRERR SSR), stir at 360 rpm for 120 s, and pass through a sieve with an opening of 0.71 mm. The residue remaining on the top was used as a waste, and its mass was measured. About solubility, the increase / decrease rate (%) of the mass with respect to the comparative example 1 was measured and evaluated. Table 2 shows the results.

As shown in Table 2, the protein granules of Example 1 and Comparative Example 1 had less fouling in Example 1 using the method of the present invention, although the compositions were the same. That is, it was found that protein solubility can be improved by performing fluidized bed granulation using a spray solution containing protein.
Moreover, all the granules of Examples 1 to 3 were less damped than Comparative Example 1. It was found that the concentration of WPC in the spray liquid is preferably 5% by mass to 21% by mass.

<Examples 4 and 5>
In the same manner as in Example 1, granules containing the protein of Example 4 were produced.
A granule containing the protein of Example 5 was produced in the same manner by replacing WPC in the spray solution used in Example 4 with a whey peptide (hydrolyzate of whey protein, (product name HY-7907 (Arla Foods))). .
Moreover, the granule containing the protein of the comparative example 2 was manufactured similarly to the comparative example 1.
The obtained granules were subjected to a dissolution test in the same manner as in Examples 1 to 3 except that the stirring time was set to 60 s, and the rate of increase / decrease (%) in the amount of lumps relative to Comparative Example 2 was measured.
The results are shown in Table 3.

In Example 5 using a whey peptide as a spray solution, it was possible to significantly suppress lumps compared to Comparative Example 2 as in Example 4 using WPC.
From this, it turned out that the hydrolyzate other than WPC can also be used as a binder in the case of granulation.

<Example 6>
Granules containing the protein of Example 6 were produced using the amounts shown in Table 4.
As a powder raw material containing the first protein, a whey protein isolate (protein content: 85% by mass) was used.
As a spray solution containing the second protein, a 22% by mass aqueous solution and / or dispersion of the whey protein isolate was used.
Using the powder raw material and the prepared spray liquid, granulation was performed using a fluidized bed granulator.

<Comparative Example 3>
The granule containing the protein of Comparative Example 3 contains 5% of WPI added to the spray solution in Example 6 as a powder raw material, except that an aqueous solution prepared so as to have a sugar concentration equivalent to that of the Example is used as the spray solution. It was produced by the same method as in Example 6.

  In order to verify the effect of granulation using a spray solution containing protein, the solubility test was performed on the obtained granules of Examples and Comparative Examples by the same method as the test method for Examples 1 to 3. . However, the stirring conditions were 540 rpm and 60 s. Table 5 shows the results.

  Even when WPI was used as the first protein and the second protein, the effect of suppressing lumps was obtained.

<Example 7>
Granules containing the protein of Example 7 were produced using the amounts shown in Table 6.
As a powder raw material containing the first protein, a mixture of whey protein concentrate used in Example 1 and a calcium salt of casein protein (protein content 90 mass%) was used.
As a spray solution containing the second protein, a 21% by mass aqueous solution and / or dispersion of the whey protein concentrate was used.
Using the powder raw material and the prepared spray liquid, granulation was performed using a fluidized bed granulator.

<Comparative Example 4>
For the granule containing the protein of Comparative Example 4, 3.8% of WPC added to the spray solution in Example 7 was included in the powder raw material, and an aqueous solution prepared to have a sugar concentration equivalent to that of the Example was used as the spray solution. Except for the above, it was produced in the same manner as in Example 7.

  In order to verify the effect of granulation using a spray solution containing protein, the solubility test was performed on the obtained granules of Examples and Comparative Examples by the same method as the test method for Examples 1 to 3. . However, the stirring time was 60 s. Table 7 shows the results.

  When WPC and casein protein were used in combination as the first protein and WPC was used as the second protein, an extremely high effect of suppressing lumps was obtained.

<Example 8>
Granules containing the protein of Example 8 were produced with the amounts shown in Table 8.
As a powder raw material containing the first protein, separated soy protein (protein content 87% by mass) was used.
As the spray solution containing the second protein, a 17% by mass aqueous solution and / or dispersion of separated soybean protein was used.
Using the powder raw material and the prepared spray liquid, granulation was performed using a fluidized bed granulator.

<Example 9>
In the granule containing the protein of Example 9, the separated soy protein used in the spray solution in Example 8 was replaced with soy peptide (soy protein hydrolyzate, (product name: High Newt AM (Fuji Oil)). Manufactured.

<Comparative Example 5>
The granule containing the protein of Comparative Example 5 contains 3% of the separated soybean protein added to the spray solution in Example 8 as a powder raw material, and an aqueous solution prepared to have a sugar concentration equivalent to that of the Example is used as the spray solution. It was manufactured by the same method as in Example 8 except that.

  In order to verify the effect of granulation using a spray solution containing protein, the solubility test was performed on the obtained granules of Examples and Comparative Examples by the same method as the test method for Examples 1 to 3. . However, 10 g of granules were added to 200 ml of water at 4 ° C., and the stirring conditions were 300 rpm and 30 s. Table 9 shows the results.

Even when isolated soybean protein was used as the first protein and the second protein, the effect of suppressing extremely high lumps was obtained.
Moreover, also when using soybean peptide (hydrolyzate) instead of separated soybean protein as the second protein, the effect of suppressing lumps was obtained.

<Example 10>
Granules containing the protein of Example 10 were produced using the amounts shown in Table 10.
The separated soy protein was used as a powder raw material containing the first protein.
As the spray solution containing the second protein, a 17% by mass aqueous solution and / or dispersion of the WPC was used.
Using the powder raw material and the prepared spray liquid, granulation was performed using a fluidized bed granulator.

<Comparative Example 6>
The granule containing the protein of Comparative Example 6 contains 3% of WPC added to the spray solution in Example 10 as a powder raw material, except that an aqueous solution prepared so as to have a sugar concentration equivalent to that of Example is used as the spray solution. It was produced by the same method as in Example 10.

  In order to verify the effect of granulation using a spray solution containing protein, the solubility test was performed on the obtained granules of Examples and Comparative Examples by the same method as the test method for Examples 1 to 3. . However, 15 g of granules were added to 200 ml of water at 4 ° C., and the stirring conditions were 300 rpm and 30 s. Table 11 shows the results.

  Even when the first protein and the second protein were proteins of different origins, the effect of suppressing high lumps was obtained.

<Summary>
From the above examples, it was found that granules containing protein with improved solubility can be produced by granulating by fluidized bed granulation while spraying the spray solution containing the protein of the present invention.

  INDUSTRIAL APPLICABILITY The present invention can be used for the production of a nutritional functional food that contains a protein at a high content and is dissolved and dispersed in a drinking solvent such as water.

Claims (9)

This is a method for producing a protein-containing granule by granulating a powder raw material containing 60% by mass or more of one or more first proteins selected from milk protein, egg protein, and vegetable protein by fluidized bed granulation. And
The powder raw material is granulated by spraying a spray solution containing at least one second protein selected from milk protein, egg protein, and vegetable protein and / or a hydrolyzate thereof. ,Production method.   The method according to claim 1, wherein the first protein is one or more selected from milk protein and soybean protein. The production method according to claim 1 or 2 , wherein the second protein is at least one selected from whey protein and soybean protein.   The said hydrolyzate is 1 or more types selected from the hydrolyzate of whey protein and the hydrolyzate of soybean protein, The manufacturing method in any one of Claims 1-3 characterized by the above-mentioned.   The production method according to any one of claims 1 to 4, wherein the first protein and the second protein and / or a hydrolyzate thereof have the same origin.   The said spray liquid contains 3-25 mass% of said 2nd protein and / or its hydrolyzate, The manufacturing method in any one of Claims 1-5 characterized by the above-mentioned.   The production method according to claim 1, wherein an emulsifier is further added to at least one of the powder raw material and the spray liquid.   The production method according to claim 1, wherein the protein-containing granule contains 50% by mass or more of protein.   The protein containing granule manufactured by the manufacturing method in any one of Claims 1-8.