JPH11239451A - Production of tissue-like protein molded product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a tissue-like protein molded product by plasticizing and melting a material consisting mainly of a vegetable protein and subsequently injecting the melted material into a mold under a vacuum state, capable of producing the tissue-like protein molded product having a large size and a high density. SOLUTION: This method for producing a tissue-like protein molded product comprises feeding a material consisting mainly of a vegetable protein, further containing starch, a moisture-retaining agent and a nucleating agent in amounts of 0-60 wt.%, 0-70 wt.% and 0-3 wt.%, respectively, based on the amount of crude protein in the material and having a water content of 5-30% into an injection device 11, plasticizing and melting the fed material at a temperature of 120-180 deg.C, and subsequently injecting the plasticized and melted material into a space on the insides of inner walls 4 having many holes 3 and disposed on the inside of a mold 1 through chambers 5 in a state that the inside of the mold 1 is maintained in vacuo.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a textured protein molded article, and more particularly, to a method of injecting a plasticized melt into a mold under a vacuum using a material mainly composed of vegetable protein. And a novel improvement for obtaining a textured protein molded article.

[0002]

2. Description of the Related Art Conventionally, a method for producing a protein food having a high-density fiber structure by processing a material mainly composed of vegetable protein powder using an extruder is well known without mentioning a document name. Things. In this conventional production method, a protein material and water are supplied into an extruder, and the protein material is plasticized by heating and pressurizing in the extruder, and the plasticized protein material is air-conditioned from a die attached to the tip of the extruder. Extrusion into the inside resulted in a protein food having a tissue structure in which protein fibers were oriented in the extrusion direction. In this case, a slight difference in texture and the like appears depending on the composition of the material to be treated, but since this protein food has the above-mentioned tissue structure,
It has a texture very similar to livestock meat. In the case of producing a structured protein food having a texture very similar to that of the aforementioned meat, the protein material plasticized in the extruder is more densely oriented as the protein material is extruded at a higher speed than the die hole. , It has an organizational structure very similar to meat.

[0003]

Since the conventional method is configured as described above, there are the following problems. That is, in a method using a conventional extruder,
In order to obtain a textured protein product having a large size, it is necessary to enlarge the extrusion hole of the die. However, when the extrusion hole of the die is enlarged, the material pressure at the die part becomes low because the opening area of the hole becomes large, and the extrusion speed also becomes slow, so that the extruded product has insufficient formation of protein fibers, The fibers are condensed and hardened, and only those having extremely poor texture can be obtained. For this reason, it was not possible to produce a textured protein product having a high-density fiber structure with large dimensions.

[0004] The present invention has been made to solve the above problems, and in particular, a plasticized melt obtained by plasticizing and melting a material containing a vegetable protein as a main component under vacuum conditions. The present invention provides a method for producing a structured protein molded article which is produced by injecting into a metal mold and producing a structured protein product having a large size and a dense fiber structure.

[0005]

According to the present invention, there is provided a method for producing a textured protein molded product, wherein a material containing a vegetable protein as a main component is used, and 0 to 60% by weight of starch relative to the crude protein in the material. Said material, consisting of 0-70% by weight of humectant, 0-3% by weight of nucleating agent and containing 5-30% of water, is supplied to the injection device and heated to a temperature of 120-180C. The plasticized melt that has been plasticized and melted, on the inside of the inner wall having a number of holes provided through the chamber inside the mold, while the inside of the mold is kept in a vacuum,
Injection to obtain a textured protein molded body, further,
The vegetable protein is a method comprising one or more of defatted soy protein, concentrated soy protein, isolated soy protein, and wheat protein, and the starch is corn starch, wheat starch, One of rice starch and tapioca starch
This is a method composed of two or more types.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the method for producing a tissue protein molded article according to the present invention will be described below with reference to the drawings. In FIG. 1, a reference numeral 1 designates a mold composed of first and second mold parts 1A and 1B which can be opened and closed by an opening and closing part 1a having a sealing material 1b such as an O-ring. The cavity 2 of the mold 1 is formed by a plurality of inner walls 4 having a large number of holes 3. A plurality of chambers 5 each having a concave portion are formed inside each of the inner walls 4 of the mold 1, and the cavity 2 and each of the chambers 5 communicate with each other through the holes 3.

Each of the mold portions 1A and 1B of the mold 1 is held by a movable plate 6 and a fixed plate 7.
An opening / closing valve 10, which is opened and closed by a driving cylinder 9, is provided in a nozzle port 8 formed in a second mold portion 1 </ b> B provided on the side. An injection nozzle 12 of an injection device 11 is in contact with the nozzle port 8 via a sealing material 13 such as an O-ring, and the opening / closing valve 10 can be provided in the injection nozzle 12.

Each of the chambers 5 has a mold 1A,
A vacuum tank 18 is connected via piping 16 and 17 having valves 14 and 15 which are connected to 1B and can be opened and closed. The vacuum tank 18 is connected to a vacuum device 19.

Next, the operation will be described. First, when the injection nozzle 12 is brought into contact with the nozzle receiving port 8 of the mold 1, the opening / closing valve 10 is closed, and the vacuum device 19 is operated with the valves 14 and 15 opened, the inside of the cavity 2 and the chamber 5 becomes vacuum. Become. At the same time, by processing food materials such as proteins described below using an injection molding machine not shown,
The food material is heated in the injection device 11 of the injection molding machine,
It is plasticized by being pressurized. The plasticized and measured plasticized molten material is forcibly injected from the large-diameter injection nozzle 12 into the vacuum mold 1 by the injection device 11 at high speed. By injecting the plasticized melt into the vacuum mold 1 at a high speed and a high pressure difference, the generated steam is instantaneously discharged from the hole 3 through the chamber 5 to the vacuum tank 18 outside the mold 1, The plasticized melt is filled into the mold 1 while causing dense foaming. After the injection is completed, the open / close valve 10 and the valves 14 and 15 are closed, and the measurement of the material is started by the measuring means (not shown). The plasticized melt is rapidly cooled together with the foaming, and by opening the mold 1, a tissue-like protein molded article having a uniform and dense foamed structure of the mold 1 can be obtained. After that, mold 1 again
Is closed, the valves 14 and 15 are opened, and the open / close valve 1 is opened.
0 is closed and the interior of the mold 1 is evacuated by the operation of the vacuum device 19 to prepare for the next injection. Therefore, by processing a material containing a vegetable protein as a main component using a molding device, the protein material is plasticized by being heated and pressed in an injection device of the molding device. When the plasticized protein is forcibly injected into the mold 1 from the large-diameter nozzle by the injection device 11 at a high speed, the material is injected into the low-temperature mold at a high speed and a high pressure difference. It is filled in the mold 1 while causing dense foaming. The water vapor generated along with the foaming of the material is forcibly removed from the outside of the mold 1, and the protein material is rapidly cooled in the mold 1 to form a tissue-like protein having a uniform and dense fiber structure in the shape of the mold 1. You can get the body.

Next, a preferred embodiment of the method for producing a textured protein molded article according to the present invention will be described. First, a method for producing a protein pellet will be described. As the extruder, a well-known Nippon Steel Works (TEX30F: screw outer diameter 30 mm, L / D18.
Using the twin-screw extruder of 5), vegetable protein is used as the protein, wheat starch is used as the starch, eggshell powder is used as the nucleating agent, and these proteins: starch: nucleating agent are used at 100: 25: The mixed powder and water mixed in 1 were supplied into an extruder, heated and kneaded, and extruded from a die to obtain starch pellets. The mixed powder and water were supplied to the extruder at a ratio of 100: 100, and the extruded protein pellets were obtained at a material temperature of 130 ° C. next,
The obtained protein pellet was subjected to ventilation drying at 40 ° C. for 24 hours to obtain a molding pellet. At this time, the moisture content of the pellets was 13.2%.

Next, a method for producing a textured protein molded product will be described. An injection molding machine (manufactured by Nippon Steel Works: J150EII-P, mold clamping force 150 tons, with accumulator) was used as the molding machine. The molding conditions are: injection rate;
cm ³ / sec, cylinder temperature: 100/120/16
0/170 ° C, nozzle temperature; 170 ° C, nozzle diameter; 10
mm. 30 × 150 ×
A 150 mm porous mold 1 shown in FIG. 1 was used. The obtained textured protein molded article had excellent fibrous properties.
Therefore, in the present invention, 0 to 60% by weight of starch, 0 to 60% by weight based on the crude protein in the material containing plant protein as a main component.
Consisting of 70% by weight humectant, 0-3% by weight nucleating agent,
Using a material containing 5 to 30% moisture, 120 to 18
It was confirmed that the case of using a plasticized melt that was heated to a temperature of 0 ° C. and plasticized and melted was optimal. The vegetable protein is most preferably one or more of defatted soy protein, concentrated soy protein, isolated soy protein, and wheat protein, and the starch is corn starch, wheat starch, rice starch, One or more of the tapioca starches were optimal.

[0012]

The method for producing a textured protein molded article according to the present invention is configured as described above, and the following effects can be obtained. (1) By injecting into a mold under a vacuum at a higher speed than a nozzle having a large diameter, a protein molded product having a large-sized and dense fiber structure can be obtained. (2) Since the material is injected at a speed and pressure difference several times higher than the extrusion speed and pressure difference of the material by the extruder, which is a conventional production method, each protein fiber can be formed into a finer and denser structure. Thus, it is possible to obtain a product having a texture closer to meat. (3) In the injection device of the molding apparatus, the plasticized protein material is measured, and a certain amount of the protein material is injected into the mold, so that a textured protein molded product having a stable (constant) weight and shape is obtained. be able to.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing a method for producing a textured protein molded article according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Die 3 Hole 4 Inner wall 5 Chamber 11 Injection device

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI // B29K 1:00 105: 04

Claims (3)

[Claims] 1. Use of a material containing plant protein as a main component,
0 to 60% by weight starch based on the crude protein in the material;
Said material consisting of 0-70% by weight of humectant, 0-3% by weight of nucleating agent and containing 5-30% of water is fed to the injection device (11) and has a temperature of 120-180C. The plasticized melt obtained by being heated and plasticized and melted in a mold (1)
Many holes (3) provided through the chamber (5) inside the
A method for producing a tissue-like protein molded product, which comprises injecting into the inside of the mold (1) inside the inner wall (4) having a vacuum to obtain a tissue-like protein molded product. 2. The vegetable protein according to claim 1, wherein the vegetable protein comprises one or more of defatted soy protein, concentrated soy protein, isolated soy protein, and wheat protein.
A method for producing a textured protein molded article according to the above. 3. The textured protein molding according to claim 1, wherein the starch is composed of one or more of corn starch, wheat starch, rice starch, and tapioca starch. How to make the body.