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A method for reducing protein isolate and secondly extracting soybean dregs crude protein

A protein and crude protein separation technology, applied in the preparation method of peptides, chemical instruments and methods, peptides, etc., can solve the problems of affecting the CP removal rate of bean dregs, affecting the secondary dissolution effect, uneven pH value, etc., to reduce production The effect of reducing cost, reducing CP content, and increasing product yield

Active Publication Date: 2021-10-01
KEDONG YUWANG SOY PROTEIN FOOD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the short retention time of alkali addition in the second alkali addition tank and the uneven pH value, it will affect the secondary dissolution effect, and further affect the removal rate of bean dregs CP

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The method for reducing the CP of the isolated protein two slag described in the present embodiment comprises the steps:

[0036] (1) Add the prepared process water at 40-43°C to the extraction tank, add liquid caustic soda, the pH of the alkaline water is controlled between 11±0.5, and add edible low-temperature soybean meal, the ratio of soybean meal to water is 1:8.21, The pH of the feed liquid is controlled between 7.0-7.5, and the dissolving time is 30 minutes (the amount of alkali added is 13.5±0.5kg). The first-extraction separator, after being centrifuged at a high speed by the centrifuge, separates the feed liquid into solid and liquid, and the solid is pushed out by the inner screw of the separator to become a first-extraction bean dregs, and the liquid will flow out from the overflow port, which is called a first-extraction soybean milk;

[0037] (2) According to the mass ratio of 1:5, dilute and dissolve the first-extracted bean dregs obtained in step (1) wi...

Embodiment 2

[0039] The method for reducing the CP of the isolated protein two slag described in the present embodiment comprises the steps:

[0040] (1) Add the prepared 40-43°C process water into the extraction tank, add liquid caustic soda, control the pH of the alkaline water between 11±0.5, add edible low-temperature soybean meal, the ratio of soybean meal to water is 1:8, The pH of the feed liquid is controlled between 7.0-7.5, and the dissolving time is 30 minutes (the amount of alkali added is 13.5±0.5kg). The first-extraction separator, after being centrifuged at a high speed by the centrifuge, separates the feed liquid into solid and liquid, and the solid is pushed out by the inner screw of the separator to become a first-extraction bean dregs, and the liquid will flow out from the overflow port, which is called a first-extraction soybean milk;

[0041] (2) According to the mass ratio of 1:2, dilute and dissolve the first-extracted bean dregs obtained in step (1) with water, and ...

Embodiment 3

[0043] The method for reducing the CP of the isolated protein two slag described in the present embodiment comprises the steps:

[0044] (1) Add the prepared 40-43°C process water into the extraction tank, add liquid caustic soda, control the pH of the alkaline water between 11±0.5, add edible low-temperature soybean meal, the ratio of soybean meal to water is 1:9, The pH of the feed liquid is controlled between 7.0-7.5, and the dissolving time is 30 minutes (the amount of alkali added is 13.5±0.5kg). The first-extraction separator, after being centrifuged at a high speed by the centrifuge, separates the feed liquid into solid and liquid, and the solid is pushed out by the inner screw of the separator to become a first-extraction bean dregs, and the liquid will flow out from the overflow port, which is called a first-extraction soybean milk;

[0045] (2) According to the mass ratio of 1:10, dilute and dissolve the bean dregs obtained in step (1) with water to dissolve the bean...

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PUM

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Abstract

A method for reducing the CP of isolated protein and dregs, comprising the following steps: (1) dissolving soybean meal in water and adding alkali for extraction, and then separating the first-extraction soymilk and the first-extraction bean dregs from solid-liquid; The okara is added with water and the pH is adjusted, then ground and sheared, and then solid-liquid separated to obtain double-extracted soymilk and second-extracted okara. In the present invention, the CP in the bean dregs is dissolved and sheared again by adding alkali for the second time, and then the CP in the bean dregs is dissolved and sheared again, and the yield is increased, and the cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a method for reducing the crude protein (CP) of isolated protein secondary extraction from bean dregs by using the secondary alkali addition and secondary shearing technology. Background technique [0002] Soybean protein is a kind of whole protein food additive produced from low temperature soybean meal. The protein content of soybean protein isolate is more than 90%, and there are nearly 20 kinds of amino acids, including amino acids necessary for the human body. It is rich in nutrition and does not contain cholesterol. It is one of the few varieties of vegetable protein that can replace animal protein. In recent years, soybean protein isolate has developed rapidly. However, the extraction rate of protein industry is currently below 45%, which is a bottleneck problem restricting the entire protein industry. Now that the market competition is so fierce, each...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07K1/14
CPCC07K1/14C07K1/145
Inventor 时秀芹
Owner KEDONG YUWANG SOY PROTEIN FOOD CO LTD