Extraction method of cottonseed protein

A cottonseed protein and extraction method technology, applied in the field of cottonseed processing, can solve the problems of increasing the amount and difficulty of recycling and purifying waste methanol, difficult to control free gossypol and aflatoxin, and the content of mildewed aflatoxin in cottonseed. The effect of reducing the amount of cottonseed protein, reducing methanol solvent consumption, and reducing the amount of steam used

Inactive Publication Date: 2017-10-10
湖南欣瑞生物科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with hot pressing and swelling technology, this process technology has been greatly improved, but in the process of removing phenols, sugars, and aflatoxins, because the leaching frame equipment and methanol soaking treatment method are used, the cottonseed meal is processed in the extractor. The drag box is in a relatively static state of accumulation, and the contact between cotton meal and methanol is insufficient, resulting in poor methanol fluidity in the environment around the meal embryo sheet, which affects the efficient extraction and removal of gossypol, sugar, and aflatoxin contained in cotton meal
If some cottonseeds have high gossypol content due to different growth regions and varieties, or cottonseeds have mildew and have high aflatoxin content, the dephenolized cottonseed protein product prepared by this soaking extraction method will have free gossypol, aflatoxin Toxins are difficult to control within the range of quality standards
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Method used

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  • Extraction method of cottonseed protein
  • Extraction method of cottonseed protein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The cottonseed is pre-treated to obtain cotton kernels, and then the cotton kernels are degreased to obtain degreased cotton meal; the degreased cotton meal is sent from the feeding device 1 to the primary leaching tank 2, and extracted at 30°C for the first stage Leaching and extraction, the material is discharged from the bottom of the tank after continuous stirring in the tank, and is sent to the secondary leaching tank 3 by the first conveyor 9, extracted at 40°C for secondary leaching and extraction, and then discharged by the first conveyor 9 after continuous stirring. into the tertiary leaching tank 4, extracted at 45°C for tertiary leaching and extraction, and then the material discharged from the tertiary leaching tank 4 is sent to the leaching and draining machine 5 to drain by the second conveyor 11, and the material is drained and then transported to Desolvation and drying. The extraction time of the material is 10 minutes under continuous stirring in the le...

Embodiment 2

[0065] The cottonseed is pre-treated to obtain cotton kernels, and then the cotton kernels are degreased to obtain degreased cotton meal; the degreased cotton meal is sent from the feeding device 1 to the primary leaching tank 2, and extracted at 40°C for primary extraction Leaching and extraction, the material is discharged from the bottom of the tank after continuous stirring in the tank, and is sent to the secondary leaching tank 3 by the first conveyor 9, extracted at 35°C for secondary leaching and extraction, and then discharged by the first conveyor 9 after continuous stirring. into the tertiary leaching tank 4, extracted at 50°C for tertiary leaching and extraction, and then the material discharged from the tertiary leaching tank 4 is sent to the leaching and draining machine 5 by the second conveyor 11 to drain, and the material is drained and then transported to Desolvation and drying. The extraction time of the material is 15 minutes under continuous stirring in the...

Embodiment 3

[0069] The cottonseed is pre-treated to obtain cotton kernels, and then the cotton kernels are degreased to obtain degreased cotton meal; the degreased cotton meal is sent from the feeding device 1 to the primary leaching tank 2, and extracted at 40°C for primary extraction Leaching and extraction, the material is discharged from the bottom of the tank after continuous stirring in the tank, and sent to the secondary leaching tank 3 by the first conveyor 9, extracted at 45°C for secondary leaching and extraction, after continuous stirring, it is discharged from the first conveyor 9 into the tertiary leaching tank 4, extracted at 55°C for tertiary leaching and extraction, and then the material discharged from the tertiary leaching tank 4 is sent to the leaching and draining machine 5 to drain by the second conveyor 11, and the material is drained and then transported to Desolvation and drying. The extraction time of the material is 25 minutes under continuous stirring in the lea...

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Abstract

The invention provides an extraction method of cottonseed protein. The extraction method comprises the following steps of pretreating cottonseeds to obtain cottonseed kernels, and then defatting the cottonseed kernels so as to obtain defatted cottonseed meal; at least performing two stages of leaching extraction on the defatted cottonseed meal with a methanolic solution so as to obtain leached materials, wherein the time of each stage of the leaching extraction is 10-30min, the concentration of the methanolic solution is 85-95%, and the weight ratio of the defatted cottonseed meal to the methanolic solution is 1 to (0.8-2); and then draining the leached materials, and performing desolventizing and drying so as to obtain the cottonseed protein. According to the extraction method of the cottonseed protein disclosed by the invention, quick, high-efficient and thorough removal of non-protein ingredient substances and hazardous substances in cottonseed meal is realized, and the made cottonseed concentrated protein is high in content and high in nutritive efficiency.

Description

technical field [0001] The invention belongs to the technical field of cottonseed processing, and relates to a protein extraction method, in particular to a cottonseed protein extraction method. Background technique [0002] At present, the production methods of cottonseed processing to produce cottonseed protein include traditional hot pressing production and puffing production. The production process of hot pressing and expanding is the process steps of cottonseed cleaning, crushing, separation, steaming and frying, hot pressing (expansion), drying, oil extraction and desolventization. The crude protein content of the cotton meal prepared by this process is 42-46%. Due to the high temperature process used in the production process, the denaturation of cotton protein is large, the solubility of cotton protein potassium hydroxide is low, and its amino acids are destroyed. At the same time, no dephenolization, aflatoxin removal and other anti-nutritional factors, such as ta...

Claims

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Application Information

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IPC IPC(8): A23J1/14
CPCA23J1/142
Inventor 管毅宋冠毅方光明张孝志刘志勇邓泳郭建平文保中
Owner 湖南欣瑞生物科技有限公司
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