Technique for simultaneously extracting lipid and gossypol from cotton seed

A technology of cottonseed and gossypol, which is applied in the field of processing oil crops and can solve problems such as poisoning

Inactive Publication Date: 2013-02-27
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the toxicity of gossypol that can cause male infertility, cottonseed oil and cottonseed protein must be completel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0012] Add 1000g of shelled cotton kernel slices through temperature adjustment and tempering treatment into the extractor, add 2500ml of mixed solvent that is composed of n-hexane and 89% (v / v) ethanol aqueous solution according to the ratio of 4:1, at 60 Soak at ℃ for 120min, then filter out the leaching solution to obtain mixed oil. Add 2500ml concentration of 65% (v / v) ethanol aqueous solution to the wet defatted flour after filtering the leachate, soak for 120min at 60°C, then filter the leachate to obtain ethanol extract and wet defatted flour. Toxic cotton meal.

[0013] The mixed oil was placed on a rotary evaporator, and the mixed solvent was recovered at 60° C. and 1 kPa until solvent-free distillation was performed to obtain 38 g of cottonseed crude oil. The ethanol extract was placed on a rotary evaporator, and the ethanol was recovered at 60° C. and 1 kPa until it was distilled out without solvent to obtain 10 g of brown syrup. After testing, the content of goss...

example 2

[0015] Add 1000g of puffed shelled cotton kernels into the extractor, add 2000ml of a mixed solvent composed of n-hexane and 90% (v / v) methanol aqueous solution in a ratio of 1:1, soak at 60°C for 120min , and then filter the leachate to obtain a mixed oil. Add 2500ml of 70% (v / v) methanol aqueous solution to the wet degreased cotton meal after filtering off the leaching solution, soak for another 120min at 60°C, then filter out the leaching solution to obtain methanol extract and wet degreasing degreasing Toxic cotton meal.

[0016] The mixed oil was placed on a rotary evaporator, and the mixed solvent was recovered at 60° C. and 1 kPa until solvent-free distillation was performed to obtain 39.8 g of cottonseed crude oil. The methanol extract was placed on a rotary evaporator, and the methanol was recovered at 60° C. and 1 kPa until it was distilled off without solvent to obtain 10.6 g of brown syrup. After testing, the content of gossypol in it has reached more than 70%, w...

example 3

[0018] Add 1000g of puffed shelled cotton kernels into the extractor, add 3000ml of a mixed solvent composed of n-hexane and 86% (v / v) aqueous ethanol in a ratio of 3:1, soak at 60°C for 120min , and then filter the leachate to obtain a mixed oil. Add 2000ml concentration of 70% (v / v) ethanol aqueous solution to the wet defatted soybean meal after filtering off the leachate, soak for another 120min at 60°C, then filter out the leachate to obtain ethanol extract and wet degreasing detoxified soybean meal Cotton meal.

[0019] The mixed oil was placed on a rotary evaporator, and the mixed solvent was recovered at 60° C. and 1 kPa until solvent-free distillation was performed to obtain 37.8 g of cottonseed crude oil. The ethanol extract was placed on a rotary evaporator, and the ethanol was recovered at 60° C. and 1 kPa until it was distilled off without solvent to obtain 11.2 g of brown syrup. After testing, the content of gossypol in it has reached more than 70%, which can be...

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PUM

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Abstract

The invention belongs to the technical field of processing of oil-bearing crops, and particularly relates to a technique for simultaneously extracting lipid and gossypol from cotton seed. The invention provides a clean production technique for processing cotton seed, which has the advantages of great convenience, high efficiency, low cost and is easy to operate and control; and the existing cotton seed leaching plant can be slightly reconstructed to implement industrialized large-scale production of simultaneously extracting cotton oil and gossypol from cotton seed as well as coproduction of detoxified cotton seed protein. Compared with the prior art, by utilizing mixed solvent technology and ethanol secondary leaching technology, the technique can reduce the consumption of the No.6 solvent by 30-60%, and greatly reduce the requirement and dependence of the grease processing industry for the petroleum product; the technique can obtain high-quality gossypol and phospholipid on the premise of not generating wastewater, thereby eliminating a large pollution source of cotton seed processing industry; and meanwhile, the technique can enhance the yield of cotton oil, gossypol and detoxified cotton seed protein by 3-5%, and greatly lower the production cost, thereby having wide application prospects in the field of cotton seed processing.

Description

technical field [0001] The invention belongs to the technical field of processing oil crops, in particular to a process for simultaneously extracting lipid and gossypol from cottonseeds. Background technique [0002] Cottonseed is a by-product of cotton production and one of the bulk vegetable oil resources in my country. It contains high-quality cottonseed oil and cottonseed protein, as well as valuable medicinal raw materials gossypol. Using cottonseed as raw material, it can be processed to produce various products such as cottonseed oil, cottonseed protein, and gossypol. However, since gossypol has toxicity that can cause male infertility, cottonseed oil and cottonseed protein must be completely removed before being eaten or used as feed for non-ruminant animals such as pigs and chickens, otherwise it will cause poisoning. [0003] The current cottonseed processing technology is to leaching and extracting cottonseed with No. 6 solvent to obtain cottonseed oil and cotto...

Claims

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Application Information

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IPC IPC(8): C11B1/10C07C47/57C07C45/78
Inventor 汤鲁宏
Owner JIANGNAN UNIV
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