Rice enzymolysis protein powder with low granular sensation and preparation method and application of powder

A protein powder, grainy technology, applied in the field of rice protein, can solve the problems of high degree of hydrolysis, umami, bitter taste, etc., to achieve the effects of weak graininess, smooth protein taste, and improved sensitivity to enzymatic hydrolysis

Inactive Publication Date: 2019-05-10
WUXI JINNONG BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, a single endonuclease is mostly used, and the cleavage site is random. In order to modify the flavor, exo-type flavor enzymes are mostly used. The hydrolysis process produces more free amino acids, resulting in poor flavor of the final product.
The existing technology pays little attention to the taste of enzymatic products, but only pays attention to the degree of hydrolysis, which eventually leads to high degree of hydrolysis, bitter taste and umami taste, which affects the final application of the product

Method used

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  • Rice enzymolysis protein powder with low granular sensation and preparation method and application of powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A rice enzymatic protein powder with low graininess, the preparation method of said rice enzymatic protein powder comprises the following steps:

[0035] (1) Pre-treatment of sugar-making rice dregs: using sugar-making rice dregs as the initial raw material, passing through a 40-mesh sieve to remove large particles of impurities;

[0036] (2) High-temperature extrusion pretreatment: add water to the rice dregs raw material obtained in step (1) to adjust the powder, adjust the moisture content to 20wt%, and carry out extrusion pretreatment on the material (the temperature of the inner cavity of the extruder is set to 130° C.);

[0037] (3) Refining treatment: use 10wt% NaOH aqueous solution to adjust the pH of the rice dregs feed liquid to 7.2, carry out solid-liquid separation of the feed liquid after alkali treatment and refinement, and obtain purified protein wet residue with a protein content higher than 80%;

[0038] (4) Wet crushing: the protein wet slag is slurrie...

Embodiment 2

[0045] A rice enzymatic protein powder with low graininess, the preparation method of said rice enzymatic protein powder comprises the following steps:

[0046] (1) Pre-treatment of sugar-making rice dregs: using sugar-making rice dregs as the initial raw material, passing through a 40-mesh sieve to remove large particles of impurities;

[0047](2) High-temperature extrusion pretreatment: add water to the rice dregs raw material obtained in step (1) to adjust the powder, adjust the moisture content to 15wt%, and carry out extrusion pretreatment on the material (the temperature of the inner cavity of the extruder is set to 150° C.);

[0048] (3) Refining treatment: use 10wt% lye (NaOH, NaOH 2 CO 3 1:1 mixing) to adjust the pH of the rice dregs feed liquid to 7.5, and separate the solid-liquid separation of the feed liquid after alkaline treatment to obtain purified protein wet residue with a protein content higher than 80%;

[0049] (4) Wet crushing: the protein wet slag is s...

Embodiment 3

[0056] A rice enzymatic protein powder with low graininess, the preparation method of said rice enzymatic protein powder comprises the following steps:

[0057] (1) Pre-treatment of sugar-making rice dregs: using sugar-making rice dregs as the initial raw material, passing through a 40-mesh sieve to remove large particles of impurities;

[0058] (2) High-temperature extrusion pretreatment: add water to the rice dregs raw material obtained in step (1) to adjust the powder, adjust the moisture content to 10wt%, and carry out extrusion pretreatment on the material (the temperature of the inner cavity of the extruder is set to 160° C.);

[0059] (3) Refining treatment: use 10wt% lye (NaOH, NaOH 2 CO 3 , NaHCO 3 1:1:1 compounding) to adjust the pH of the rice dregs feed liquid to 8.0, and separate the solid-liquid separation of the feed liquid after the alkali treatment to obtain purified protein wet dregs, the protein content of which is higher than 80%;

[0060] (4) Wet crushi...

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Abstract

The invention discloses rice enzymolysis protein powder with low granular sensation. A preparation method of the rice enzymolysis protein powder comprises the following steps of 1, pretreatment of sugaring rice residues; 2, high-temperature extrusion pretreatment; 3, refining treatment; 4, wet-method smashing; 5, enzymolysis controlling; 6, enzyme deactivation; 7, micro-jet treatment; 8, sprayingand drying; 9, smashing. According to the rice enzymolysis protein powder with low granular sensation, for rice enzymolysis protein, the protein content is larger than 80%, the fat content is smallerthan 3%, the moisture content is smaller than 5%, the nitrogen dissolution index is larger than 30%, and according to the condition of the soluble protein molecular weight distribution, the proportionwith the molecular weight smaller than 2,000 Da is larger than 70%.

Description

technical field [0001] The invention relates to the technical field of rice protein, in particular to a rice enzymatic protein powder with low graininess and its preparation method and application. Background technique [0002] Rice protein powder is mainly derived from rice, which contains about 8% protein. Most of the raw materials of rice protein are fermented rice dregs from sugar factories and monosodium glutamate factories. The protein in this raw material is enriched and its content is high. Greater than 50%. It is one of the most economical and effective ways to use this raw material as a base material for further purification to obtain edible rice protein powder with a food-grade protein content of more than 80%. The protein in rice dregs is mainly water-insoluble glutenin. The protein undergoes long-term high-temperature liquefaction and amylase hydrolysis in the previous process, denatured and coagulated between protein molecules, and formed between protein molec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/12A23L33/185A23K20/147A23L2/66
CPCA23K20/147A23L2/66A23L33/185A23J1/12A23L2/60A23J3/14A23K50/40A23J1/005A23J3/346A23K10/30
Inventor 陈天祥于秋生平向莉
Owner WUXI JINNONG BIOTECH CO LTD
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