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Method for extracting protein from bean starch production wastewater

A bean starch and waste water production technology, applied in the field of protein extraction, can solve the problems of waste of protein resources, low recovery rate, waste of resources, etc., and achieve the effect of reducing COD content, good quality, and reducing environmental pollution

Inactive Publication Date: 2010-12-08
YANTAI ORIENTAL PROTEIN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while producing green (pea) bean starch, the most nutritious and economically valuable protein resource in green (pea) bean is wasted. Although domestic manufacturers have recovered protein from pulp water, they are limited by technology and equipment. Low recovery rate and poor quality, mainly used as feed, resulting in a great waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of method of extracting protein from soybean starch production wastewater of the present embodiment comprises the following technological process:

[0027] 1. Separation

[0028] Put the waste water produced by processing mung bean starch into the separator, and separate the starch and protein liquid in the waste water with a pH value of 8, wherein the starch content in the protein liquid is less than 5%;

[0029] 2. Adjustment

[0030] Adjust the pH value of the protein solution so that its pH value is 4;

[0031] 3. Heating

[0032] Heat the protein solution to 40°C, and then keep it warm for 0.8 hours;

[0033] 4. Neutralization

[0034] Add NaoH to the protein solution to adjust the pH value of the protein solution to 6;

[0035] 5. Dehydration

[0036] Use a centrifuge to dehydrate the protein liquid, so that the protein solid content in the protein liquid accounts for 10-20% of the protein liquid;

[0037] 6. Drying

[0038] The dehydrated protein s...

Embodiment 2

[0040] A kind of method of extracting protein from soybean starch production wastewater of the present embodiment comprises the following technological process:

[0041] 1. Separation

[0042] Put the waste water produced by processing the starch of pea, broad bean and cowpea into the separator, and separate the starch and protein liquid in the waste water with a pH of 9, wherein the starch content in the protein liquid is less than 5%;

[0043] 2. Adjustment

[0044] Adjust the pH value of the protein solution so that its pH value is 4.5;

[0045] 3. Heating

[0046] Heat the protein solution to 50°C, and then keep it warm for 1 hour;

[0047] 4. Neutralization

[0048] Add CaoH to the protein solution to adjust the pH value of the protein solution to 7;

[0049] 5. Dehydration

[0050] Use a centrifuge to dehydrate the protein liquid, so that the protein solid content in the protein liquid accounts for 10-20% of the protein liquid;

[0051] 6. Drying

[0052] The deh...

Embodiment 3

[0054] A kind of method of extracting protein from soybean starch production wastewater of the present embodiment comprises the following technological process:

[0055] 1. Separation

[0056] Put the waste water produced by processing starch from kidney beans and red beans into the separator, and separate the starch and protein liquid in the waste water with a pH value of 10, wherein the starch content in the protein liquid is less than 5%;

[0057] 2. Adjustment

[0058] Adjust the pH value of the protein solution so that its pH value is 5;

[0059] 3. Heating

[0060] Heat the protein solution to 60°C, and then keep it warm for 1.2 hours;

[0061] 4. Neutralization

[0062] Add NaoH to the protein solution to adjust the pH value of the protein solution to 8;

[0063] 5. Dehydration

[0064] Use a centrifuge to dehydrate the protein liquid, so that the protein solid content in the protein liquid accounts for 10-20% of the protein liquid;

[0065] 6. Drying

[0066] T...

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PUM

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Abstract

The invention relates to a method for extracting protein from bean starch production wastewater, and belongs to the technical field of protein extraction. The method for extracting the protein from the bean starch production wastewater is characterized by comprising the following process flows of: 1, separation; 2, regulation; 3, heating; 4, neutralization; 5, dehydration; and 6, drying. The method for extracting the protein from the bean starch production wastewater has simple process flows and high product yield, greatly reduces the COD content of the wastewater, can effectively increase the added value of a product, reduce environmental pollution and relieve sewage treatment burden, and greatly improves the utilization rate of resources; and the extracted protein has good quality and has no color change or peculiar smell.

Description

technical field [0001] The invention relates to a method for extracting protein, belonging to the technical field of protein extraction methods. Background technique [0002] The bean starch processing process is: first wash the bean to remove impurities, and then separate the coarse starch and crude protein by ultra-fine crushing dry method. After the protein in the crude starch is dissolved by alkali, the protein is separated by a separator, and the starch is dehydrated. Then dry. [0003] Mung beans and peas are leguminous plants mainly composed of starch, protein and fiber, and are widely planted in many places in my country. At present, the starch resources in mung beans and peas can be fully utilized in China, but the utilization of their protein and fiber is limited to feeding. Zhaoyuan City is the birthplace and main production area of ​​Longkou vermicelli in China. It has more than 120 large and small vermicelli enterprises, with an annual output of more than 200,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23J1/16
Inventor 赵立亭
Owner YANTAI ORIENTAL PROTEIN TECH