CN101029074A

CN101029074A - Method for producing cottonseed protein wet dregs by leaching method

Info

Publication number: CN101029074A
Application number: CN 200710014067
Authority: CN
Inventors: 孙旭东
Original assignee: 孙旭东
Current assignee: Zhongmian Ziguang Biological Science and Technology Co., Ltd., Beijing
Priority date: 2007-04-02
Filing date: 2007-04-02
Publication date: 2007-09-05

Abstract

A process for preparing the wet cotton seed protein dregs by leaching-out method includes such steps as loading the raw cotton seed protein material in storage tank, extracting oil in solvent, dephenolizing in methanol, and removing part of solvent.

Description

A kind of method of producing cottonseed protein wet dregs by leaching method

Technical field:

The present invention relates to the production method of vegetable-protein extraction, especially a kind of production method of producing cottonseed protein wet dregs by leaching method.

Background technology:

China is one and produces cotton big country, and the cottonseed cake resource is very abundant, and the protein content in the cottonseed cake is about 40%, and therefore, cottonseed cake is the same with soybean cake, is a kind of source best in quality rich vegetable protein matter.Yet,, can not effectively utilize because cottonseed cake contains a small amount of toxic substance---gossypol.At present, doing a lot of work aspect the cottonseed processing detoxification, as with the further boiling of cottonseed cake, steam heat spray, solvent leach again, alkaline process processing, microbial fermentation etc., obtaining certain effect among a small circle, but since detoxification not thoroughly, cost is high, fails large scale continuous prod.

Summary of the invention:

For solving the shortcoming of existing production technique, the present invention proposes a kind of production technique of producing cottonseed protein wet dregs by leaching method.

Of the present inventionly to the effect that realize by following technical scheme:

Cottonseed protein stock is inserted in the buffer bin, be delivered to embedded scraper transporter and sealing auger and carry oily leacher; Add solvent and carry oil toward carrying in the oily leacher with solvent pump, 50-55 ℃ of leach liquor solvent temperature, bed thickness 300mm, leach liquor is 1 with material embryo weight ratio: 1.5-1: 2.2, miscella concentration is 15-20%, extraction time is 120 minutes; The wet dregs of rice of carrying behind the oil are delivered to the dephenolize leacher by embedded scraper transporter; Methyl alcohol pumped in the dephenolize leacher remove gossypol, 40-50 ℃ of leach liquor solvent temperature, soak time 35 minutes, the solvent makeup amount is 1.5-2m2/h, free gossypol is less than 400ppm in the finished product cotton protein, and the wet dregs of rice after the dephenolize are delivered to dehydrator and remove partial solvent, and useless methyl alcohol reclaims.

Compared with prior art, but present method has continuous production, and extraction time is short, the wet dregs of rice quality height of output, advantage such as production technique is simple.

Description of drawings:

Accompanying drawing is production unit of the present invention and process flow sheet.

Embodiment:

Be described in detail embodiments of the invention below in conjunction with accompanying drawing.

The method of producing cottonseed protein wet dregs by leaching method, production stage is:

A: thickness is even, solid, become powder few, the cottonseed protein stock 8 that trash content is low is inserted in the buffer bin 1, is delivered to embedded scraper transporter 2 and sealing auger 3 and carries oily leacher 4; The bed depth of buffer bin 1 is not less than 500mm, is lower than when height should be arranged, and stops immediately injecting the 6# solvent to carrying oily leacher 4; Sealing auger 3 plays the effective closure effect when requiring material to enter to carry oily leacher 4, and the 6# solvent gas overflow from opening for feed in the oily leacher 4 to prevent to carry.

B: add 6# solvent 9 and carry oil toward carrying in the oily leacher 4 with solvent pump, carry oily leacher 4 mouth spray solvents 9 sprays evenly, leach liquor solvent 9 temperature 50-55 ℃, bed thickness 300mm, leach liquor solvent 9 is 1: 1.5 with material embryo 1 weight ratio, miscella concentration is 15-20%, and extraction time is 120 minutes; The wet dregs of rice of carrying behind the oil 11 are delivered to dephenolize leacher 6 by embedded scraper transporter 5;

C: leach liquor solvent 12 methyl alcohol are pumped in the dephenolize leacher 6 remove gossypol, remove and contain phenol solution 13, leach liquor solvent 12 temperature 40-50 ℃, soak time 35 minutes, the solvent makeup amount is-2m ²/ h, free gossypol is less than 400ppm in the finished product cotton protein, and the wet dregs of rice 7 after the dephenolize are delivered to dehydrator 14 and remove partial solvent, promptly obtain the wet dregs of rice of finished product, and useless methyl alcohol reclaims.

Claims

A kind of method of producing cottonseed protein wet dregs by leaching method is characterized in that its production stage is:

A: cottonseed protein stock is inserted in the buffer bin, be delivered to embedded scraper transporter and sealing auger and carry oily leacher;

B: add solvent and carry oil toward carrying in the oily leacher with solvent pump, 50-55 ℃ of leach liquor solvent temperature, bed thickness 300mm, leach liquor is 1 with material embryo weight ratio: 1.5-1: 2.2, miscella concentration is 15-20%, extraction time is 120 minutes; The wet dregs of rice of carrying behind the oil are delivered to the dephenolize leacher by embedded scraper transporter;

C: methyl alcohol pumped in the dephenolize leacher remove gossypol, 40-50 ℃ of leach liquor solvent temperature, soak time 35 minutes, solvent makeup amount are 1.5-2m ²/ h, free gossypol is less than 400ppm in the finished product cotton protein, and the wet dregs of rice after the dephenolize are delivered to dehydrator and remove partial solvent.