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Clean production process for high purity gossypol

A clean production, high-purity technology, used in the production of fats, separation/purification of carbonyl compounds, recovery of fatty oils/fatty acids from waste, etc.

Inactive Publication Date: 2016-06-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no relevant report on the extraction of gossypol by using cotton oil soapstock as raw material and using simulated moving bed chromatographic separation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Adjust the pH of 1000 g of cotton oil soapstock with a water content of 50% to 6.5 with 85% phosphoric acid, then add 1 g of phospholipase and 500 ml of ether, and stir and reflux for 3 hours at 34.6 ° C for hydrolysis. The reaction mixture was allowed to stand at 4° C. for 3 h, then separated at 4° C., and the upper organic phase was collected. The lower aqueous phase was repeatedly extracted twice with diethyl ether at a temperature of 4° C. (500 ml each time), and the obtained diethyl ether phase was combined with the organic phase to obtain an extract. Concentrate the extract on a distillation device in a water bath at 50°C, recover ether, and obtain an extract. The lower aqueous layer of the raffinate was distilled to recover ether, and 480ml of distillation residue was obtained, which was sold as a liquid fertilizer. The recovered ether is recycled.

[0024] The mixture is then placed with silica gel as an adsorbent, separated in a simulated moving bed chromatog...

example 2

[0030]Adjust the pH of 1000 g of cotton oil soapstock with a water content of 45% to 2 with 85% phosphoric acid, then add 500 ml of methyl ethyl ketone, heat up to reflux temperature, stir and reflux for 5 hours for hydrolysis. The reaction mixture was allowed to stand at room temperature for 3 h, and then separated at 24° C. to collect the upper organic phase. The lower aqueous phase was repeatedly extracted twice (500 ml each time) with butanone at room temperature, and the obtained butanone phase was combined with the organic phase to obtain an extract. The extract was concentrated on a rotary evaporator at 60° C. and 0.0001 MPa to recover butanone to obtain an extract. The lower aqueous layer of the raffinate is neutralized to neutral with potassium carbonate, and then distilled to recover butanone to obtain 300ml of distillation residue, which is sold as a liquid fertilizer. The butanone recovered is recycled.

[0031] Then the mixture is separated in a simulated moving...

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Abstract

The invention belongs to the technical field of processing oil crops. Specifically relates to a clean production process of high-purity gossypol. It provides a simple, cheap and efficient clean production process for obtaining high-purity free gossypol, and can realize large-scale industrial preparation of free gossypol. Compared with the existing process, this process does not use acetic acid to convert gossypol to gossypol acetate, and then converts gossypol acetate to gossypol, and uses simulated moving bed chromatography continuous separation technology to directly obtain a purity of 98% Ur degree of high -purity glycol, from the source of the source, except for cotton oil soap -to -foot processing acidized oil, preparing wastewater, waste residue and acetic acid waste solvents accompanied by glycol, realizing the green cleaning of cotton oil soap foot processing, eliminating it, eliminating it It has greatly improved the quality and yield of gossypol and the co-produced cotton oil fatty acid, greatly increased the added value of cotton oil soapstock, and has broad application prospects in the field of cottonseed processing. .

Description

technical field [0001] The invention belongs to the technical field of processing oil crops, in particular to a clean production process of high-purity gossypol. Background technique [0002] Cottonseed is the seed of cotton that is used for oil extraction, sowing, animal feed and other products. Cottonseed contains high-quality cottonseed oil and protein, as well as gossypol as a medicinal raw material. Except a part of cottonseed is used for seeds, the rest are processed according to the traditional cottonseed processing technology, that is, oil is produced by screw pressing, pre-pressing and leaching. The products are: cottonseed oil, cotton cake (cotton meal), cottonseed hull, soapstock . [0003] Gossypol is a polyhydric phenolic compound. It is a unique colored and toxic substance in cottonseed, accounting for 0.7-4.8% of cottonseed. It can cause redness, swelling and bleeding, loss of appetite, nervous disorders and affect male fertility. In addition, gossypol also...

Claims

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Application Information

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IPC IPC(8): C07C45/78C07C47/57C11B13/02
CPCY02W30/74C07C45/78C11B13/02
Inventor 汤鲁宏马乐文季莹莹熊兵杨菲菲冯玉舟庄振超张俐
Owner JIANGNAN UNIV
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