Production process of low-gossypol cottonseed meal

A production process and technology for gossypol are applied in the field of low-gossypol cottonseed meal production technology, can solve problems such as increased production cost, and achieve the effects of low production cost, expanded application scope and simple production process

Active Publication Date: 2021-02-23
CHENGUANG BIOTECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the dephenolized cottonseed protein is generally extracted with solvents such as methanol and ethanol. Compared with the ordinary cotton meal process, the solvent extraction process is added, and the production cost of the product is greatly increased.

Method used

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  • Production process of low-gossypol cottonseed meal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add an acid solution to the cotton kernels to adjust the pH to 3. The moisture content of the cotton kernels is 12%. 3%; after drying, the cotton germ is extracted with a vegetable oil extraction solvent with a material-to-liquid ratio of 1:0.8, and the cottonseed oil is extracted by countercurrent extraction 7 times; 8% of the weight of the cotton germ is added to the degreased cotton germ, and then subjected to 0.4Mpa superheated steam Desolvent residue was obtained to obtain low gossypol cottonseed meal with a free gossypol content of 236ppm.

Embodiment 2

[0028] Add acid solution to the cotton kernels, adjust the pH to 5, and the cotton kernel moisture to be 8%. After softening the pressed embryos, direct steam of 0.1Mpa is passed through for extrusion and puffing; after puffing, the cotton embryos are dried with 0.1Mpa superheated steam, and the moisture content of the cotton embryos after drying is 5%; after drying, the cotton germ is extracted with a vegetable oil extraction solvent with a solid-to-liquid ratio of 1:1, and countercurrent extraction is performed 9 times to extract cottonseed oil; 5% of the weight of the cotton germ is added to the degreased cotton germ, and then subjected to 0.1Mpa superheated steam Desolvent residue was obtained to obtain low gossypol cottonseed meal with a free gossypol content of 383ppm.

Embodiment 3

[0030] Add acid solution to the cotton kernels, adjust the pH to 4, cotton kernel moisture 10%, soften the pressed embryos and pass 0.2Mpa direct steam to extrude and expand; after puffing, the cotton embryos are dried with 0.3Mpa superheated steam, and the moisture content of the cotton embryos after drying 2%; after drying, the cotton germ is extracted with a vegetable oil extraction solvent with a solid-to-liquid ratio of 1:0.5, and countercurrent extracted 6 times to extract cottonseed oil; add 6% water of cotton germ weight to the degreased cotton germ, and then pass through 0.2Mpa superheated steam Desolvation residues were obtained to obtain low-gossypol cottonseed meal with a free gossypol content of 287ppm.

[0031] The following comparative examples are compared with Example 1, and different experimental conditions are changed to detect the gossypol content of the obtained cottonseed meal.

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Abstract

The invention relates to a production process of low-gossypol cottonseed meal, and belongs to the technical field of cottonseed processing. The production process comprises the following steps: (1) adding cottonseed kernels into an acidic aqueous solution, softening and pressing the cottonseed kernels, and then carrying out extruding and puffing to obtain cotton blanks; (2) drying the puffed cotton blanks by using superheated steam; (3) extracting cottonseed oil from the dried cotton blanks by using an organic solvent to obtain degreased cotton blanks; and (4) adding water into the degreased cotton blanks, and then removing solvent residues by using the superheated steam to obtain the low-gossypol cottonseed meal. The production process has the characteristics of simple process, low production cost and good gossypol removal effect.

Description

technical field [0001] The invention relates to a production process of low-gossypol cottonseed meal, which belongs to the technical field of cottonseed processing. Background technique [0002] At present, my country's annual output of cottonseed is about 7 million tons. Cottonseed protein is an important feed vegetable protein raw material in addition to soybean meal and rapeseed meal. Cottonseed has high protein content, the protein content is generally above 50%, and the high one can reach more than 60%. Gossypol is the most important anti-nutritional factor in cottonseed protein and the most important factor affecting the application value of cottonseed protein in feed. [0003] The national limit for free gossypol in cottonseed meal is 1200ppm, and the limit for free gossypol in dephenolized cottonseed protein is 400ppm. The free gossypol content of dephenolized cottonseed protein is low, and the application effect in feed formula is better. However, at present, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K10/37A23L5/20
CPCA23K10/37A23L5/21A23L5/27A23V2002/00A23V2300/24A23V2300/10Y02P60/87
Inventor 季绍东曹通史自强宋伟光
Owner CHENGUANG BIOTECH GRP CO LTD
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