Method for removing free gossypol from cotton dregs by biological fermentation method

Abstract

The invention discloses a method for removing free gossypol from cotton dregs by a microbial fermentation method, which comprises the following steps of: a, preparing cotton dreg raw materials; b, adding feed water into the raw materials, wherein the weight ratio of the cotton dreg raw materials to water is (1:0.3)-0.8; c, inoculating microbial strains according to a certain ratio, wherein the microbial strains comprise 0.1 to 10 percent of bacillus licheniformis, 0.1 to 10 percent of lactobacillus casei and 0.1 to 10 percent of saccharomyces cerevisiae according to the percentage ratio of the weight or volume of a strain-containing culture medium to the weight of the cotton dreg raw materials; d, controlling temperature and fermenting at the temperature of between 30 and 50 DEG C; and e,after the step d is finished, drying, crushing, inspecting and packaging the fermented cotton dregs. In products obtained by the method directly, the free gossypol in the cotton dregs can be degradedeffectively, and the protein quality of the cotton dregs can be improved, so that the utilization rate of the cotton dregs in various livestock and poultry feeds is improved effectively.

Description

technical field [0001] The invention belongs to the technical field of biological fermentation, and in particular relates to a method for removing anti-nutritional factors in cottonseed meal, especially free gossypol, by using a microbial fermentation method. Background technique [0002] The protein in the feed can be divided into two categories: animal protein and plant protein according to the source of raw materials. Fish meal, meat and bone meal and blood meal are rich in animal protein. Similar, so this kind of protein not only has a high absorption rate, but also has the advantages of fast absorption and low water pollution. However, the price of animal protein such as fish meal is much higher than that of plant protein, and some high-quality fish meal has to rely on imports. Vegetable protein sources include soybean meal, rapeseed meal, cottonseed meal, peanut meal, etc. Compared with animal protein such as fish meal, plant protein source is cheap and has a wide rang...

AI Technical Summary

Problems solved by technology

In the prior art, microbial fermentation is also used to remove free gossypol in cottonseed meal, but it has the following disadvantages: some methods need to sieve the cottonseed meal, and then ferment; more fully; some are performed under aerobic conditions

These conditions make the fermentation process more complicated, which is not conducive to cost saving and industrial production