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Preparation method of soluble rice protein

A rice protein, soluble technology, applied in the direction of plant protein processing, etc., can solve the problems of high cost, limited popularization and application, and strict implementation conditions

Active Publication Date: 2011-08-31
WUXI JINNONG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, these existing technologies realize the modification of rice protein through complex graft coupling technology or enzyme technology. These technologies have strict requirements on implementation conditions and high cost, so their popularization and application are greatly limited.

Method used

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  • Preparation method of soluble rice protein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Example 1: The preparation method of soluble rice protein of the present invention

[0099] The steps of this method are as follows:

[0100] (1) Mixing

[0101] According to the weight ratio of water and rice protein of 1:6, 1 kg of rice protein with a protein content of 80% and 6 kg of water are uniformly stirred and mixed to obtain a feed liquid.

[0102] (2) Crushing

[0103] The feed liquid obtained in step (1) is pulverized by micro-jet until the protein particle size is ≤10 μm, wherein the pressure of the micro-jet is 25000 psi, and the flow rate is 400 ml / min.

[0104] (3) Deamidation

[0105] In the solution that step (2) obtains, add concentration to be 37％ Concentrated hydrochloric acid, so that the concentration of hydrochloric acid in the solution is 0.1mol / L, and the solution is reacted with concentrated hydrochloric acid at 85°C for 6h.

[0106] (4) Chelation

[0107] Add 0.5% sodium tripolyphosphate based on the protein amount to the reaction solu...

Embodiment 2

[0115] Example 2: The preparation method of soluble rice protein of the present invention

[0116] The steps of this method are as follows:

[0117] (1) Mixing

[0118] According to the water to rice protein weight ratio of 1:7, the protein content of 70% 1 kg rice protein vs. 7 kg of water was stirred and mixed uniformly to obtain a feed liquid.

[0119] (2) Crushing

[0120] The feed liquid obtained in step (1) is pulverized by micro-jet until the protein particle size is ≤10 μm, wherein the pressure of the micro-jet is 25000 psi, and the flow rate is 400 ml / min.

[0121] (3) Deamidation

[0122] In the solution that step (2) obtains, add concentration to be 37％ Concentrated hydrochloric acid, so that the concentration of hydrochloric acid in the solution is 0.1mol / L, and the solution is reacted with concentrated hydrochloric acid at 83°C for 7 hours.

[0123] (4) Chelation

[0124] Add 1% sodium tripolyphosphate based on the protein amount to the reaction solution...

Embodiment 3

[0132] Example 3: The preparation method of soluble rice protein of the present invention

[0133] The steps of this method are as follows:

[0134] (1) Mixing

[0135] According to the water to rice protein weight ratio of 1:8, the protein content of 90% 1 kg rice protein vs. 8 kg of water was stirred and mixed uniformly to obtain a feed liquid.

[0136] (2) Crushing

[0137] The feed liquid obtained in step (1) is pulverized by micro-jet until the protein particle size is ≤10 μm, wherein the pressure of the micro-jet is 25000 psi, and the flow rate is 400 ml / min.

[0138] (3) Deamidation

[0139] In the solution that step (2) obtains, add concentration to be 37％ Concentrated hydrochloric acid, so that the concentration of hydrochloric acid in the solution is 0.1mol / L, and the solution is reacted with concentrated hydrochloric acid at 80°C for 5 hours.

[0140] (4) Chelation

[0141] Add 1.5% sodium tripolyphosphate based on the protein amount to the reaction soluti...

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Abstract

The invention relates to a preparation method of a soluble rice protein, comprising the following steps: mixing size, smashing, removing amide, chelating, neutralizing, desalting, carrying out spray drying and the like. The invention also relates to a soluble rice protein obtained with the preparation method, the dissolubility of the soluble rice protein is more than or equal to 70%, the emulsion stability index is more than or equal to 1.2, and the foamability is more than or equal to 60.

Description

【Technical field】 [0001] The invention belongs to the technical field of rice protein finishing. More specifically, the present invention relates to a preparation method of soluble rice protein, and also relates to the soluble rice protein obtained according to the preparation method. 【Background technique】 [0002] The content of rice protein in rice is about 7%, which is mainly composed of albumin, globulin, prolamin and glutenin. Rice protein is a high-quality vegetable protein with high nutritional value. Its amino acid composition ratio is reasonable, which is similar to the optimal ratio mode of protein amino acid recommended by FAO / WHO. In addition, the biological value (BV) and protein utility ratio (PER) of rice protein are almost the best among plant proteins. In addition, rice protein is rich in various amino acids, especially the content of lysine ranks first in cereal foods. Therefore, rice protein is an important protein source in people's diet, and its nut...

Claims

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Application Information

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IPC IPC(8): A23J3/14
Inventor 于秋生
Owner WUXI JINNONG BIOTECH CO LTD
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