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A chemical treatment method for detoxification processing of cottonseed protein

A chemical treatment and cottonseed protein technology, applied in the field of cotton meal processing, can solve the problems of low dephenolization rate, solvent recovery and residue, high energy consumption, harsh fermentation conditions, etc., to meet the needs of industrial scale production, simple process flow, The effect of high protein recovery

Active Publication Date: 2021-12-14
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, from a technical perspective, there are still many imperfections in the key technology for removing anti-nutritional factors from cotton meal, for example: the solvent extraction method has problems of low phenol removal rate, solvent recovery and residue, and the residual phenol in the meal The solvent directly affects the palatability of animals; the microbial fermentation method has defects such as harsh fermentation conditions, long production cycle, high energy consumption, large dry matter consumption, and unstable quality of the final product; while the chemical reagent method (such as: ferrous sulfate) is simple to operate , The labor intensity is not big, but it is difficult to avoid the problem of reagent residue

Method used

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  • A chemical treatment method for detoxification processing of cottonseed protein
  • A chemical treatment method for detoxification processing of cottonseed protein
  • A chemical treatment method for detoxification processing of cottonseed protein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) after mechanical comminution taking through a 30 mesh sieve dry cottonseed meal 5g, was added 25mL concentration of 3% hydrogen peroxide solution at pH 4.0, mixed evenly soaked 1.5h at 70 ℃ water bath, then centrifuge at 4000rpm in rpm for 5min, discarded the supernatant, collected solids;

[0045] (2) adding to the solid-liquid mass ratio of solids in tap water 1:10, at a temperature of 22 is immersed 4min deg.] C (to constantly stirred during immersion), and then centrifuged at 5min 4000rpm and discarded the supernatant was then repeat the soaking water, centrifugation step 1, the resulting supernatant was centrifuged acidic starch iodide test solution does not change color, the supernatant was discarded and the precipitate was collected;

[0046] (3) The precipitate is dried in a ventilated drying oven temperature of 50 deg.] C, the water content of the material to not more than 15%, cottonseed meal detoxification dried to give 4.3g.

Embodiment 2

[0048] (1) after mechanical comminution taking through a 50 mesh screen, dry cottonseed meal 5g, was added 10mL concentration of 1.5%, pH6.0 solution of hydrogen peroxide, mixed evenly soaked in a water bath at 80 ℃ 3h, then passed through the centrifuge at 4000rpm rpm for 10min, the supernatant was discarded, collected solids;

[0049] (2) adding to the solid-liquid mass ratio of solids in tap water 1:20, soaking at a temperature of 25 deg.] C 3min (to constantly stirred during immersion), and then centrifuged at 10min 4000rpm and discarded the supernatant was then repeat the soaking water, centrifugation step 1, the resulting supernatant was centrifuged acidic starch iodide test solution does not change color, the supernatant was discarded and the precipitate was collected;

[0050] (3) The precipitate is dried in a ventilated drying cabinet at 80 ℃ temperature, the water content of the material to not more than 15%, cottonseed meal detoxification dried to give 4.2g.

Embodiment 3

[0052] (1) after mechanical comminution taking through a 50 mesh screen, dry cottonseed meal 20g, was added 80mL concentration of 2.5% hydrogen peroxide solution, pH 8.0, mixed evenly soaked 8h at 50 ℃ water bath and then passed through a centrifuge at a rotation speed of 3000rpm from 15min, the supernatant was discarded, collected solids;

[0053] (2) adding to the solid-liquid mass ratio of solids in tap water 1:12, soaked at a temperature of 27 ℃ 2min (to constantly stirred during immersion), and then centrifuged at 3000 rpm for 15min and discarded the supernatant was then repeat the soaking water, centrifugation step three times, the resulting supernatant was centrifuged acidic starch iodide test solution does not change color, the supernatant was discarded and the precipitate was collected;

[0054] (3) The precipitate was under irradiation conditions of a temperature of 30 deg.] C sun dried, the material to a water content not higher than 15%, cottonseed meal detoxification ...

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Abstract

The invention discloses a chemical treatment method for detoxification processing of cottonseed protein, which comprises the following steps: adding hydrogen peroxide solution to cottonseed meal powder for first soaking, and collecting solid matter after solid-liquid separation; Washing and drying are carried out to obtain detoxified cottonseed meal. The technical scheme provided by the invention is to oxidize the aromatic aldehyde group of free gossypol in cotton meal to carboxyl group by utilizing the oxidizing property of hydrogen peroxide, so as to completely remove the gossytoxin in cotton meal, and the residual hydrogen peroxide in cotton meal is passed through It is easy to separate and remove after washing with clean water, so that there is no solvent residue in the detoxified cotton meal, and it also has the advantages of high protein recovery rate and high dephenolization rate, and the process is simple and easy to operate, which can meet the needs of industrial scale production.

Description

Technical field [0001] The present invention relates cottonseed processing technology, and more particularly relates to a method for processing a chemical detoxification cottonseed protein processing. Background technique [0002] Cottonseed protein is non-grain bulk material, which is almost comparable to the protein content of soybean meal, amino acid ratio of more balanced, soybean meal price than low protein present can be an important raw material of feed processing, but because it contains cotton toxin - free gossypol, proteins such as cottonseed protein sources of feed utilization of less than 15%, except for a few ruminants as feed, most of acting as fertilizers, extremely low cost. To the rational use of cottonseed protein resources, ease the tension of feeding protein, has developed a variety of techniques phenol removal of cottonseed protein, there are chemical passivation method, solvent extraction method, all three microbial fermentation. However, the technical analy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L5/20
CPCA23L5/27
Inventor 张剑何东平
Owner WUHAN POLYTECHNIC UNIVERSITY
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