Cottonseed-meal detoxification method

Abstract

The invention discloses a cottonseed-meal detoxification method. The cottonseed-meal detoxification method includes the following steps that 1, cottonseed meal subjected to oil expression is put into a tea fixing machine and parched for 4 minutes to 6 minutes; 2, dried cottonseed meal is put into a nylon ball-milling tank, and under the condition of the rotating speed of 140 turns/min, the dried cottonseed meal is continuously subjected to ball milling for 2 hours, and cottonseed-meal powder is obtained; 3, the cottonseed-meal powder is wetted till the water content is 40% to 42%, and a wetted material is obtained, sent to a microwave treating device and subjected to interval microwave treating under the condition that the microwave frequency is 2,450 MHz, and the power is 500 W; 4, the cottonseed-meal powder subjected to microwave treating is sent to a stirrer, zymophyte liquid with the weight accounting for 0.5%-1% of that of cottonseed-meal powder subjected to low-temperature cold-air drying, cortex dictamni extract with the weight accounting for 0.2% of that of cottonseed-meal powder subjected to low-temperature cold-air drying, salt with the weight accounting for 0.5% of that of cottonseed-meal powder subjected to low-temperature cold-air drying, zinc sulfate with the weight accounting for 0.02% of that of cottonseed-meal powder subjected to low-temperature cold-air drying, baijiu with the weight accounting for 0.6% of that of cottonseed-meal powder subjected to low-temperature cold-air drying and corn peptide with the weight accounting for 0.05% of that of cottonseed-meal powder subjected to low-temperature cold-air drying are added into the stirrer at the same time, the mixture is continuously stirred and mixed for 50 minutes or above, and standing is carried out for 3 days to 5 days; 5, the stood powder is taken out and put into a drying device, the temperature is 90 DEG C to 95 DEG C, baking is carried out till the water content of the powder is lower than 15%, and detoxification is completed.

Description

technical field [0001] The invention relates to the technical field of cottonseed meal processing, in particular to a cottonseed meal detoxification method. Background technique [0002] my country is a large cotton-producing country with abundant cotton resources. The annual output of cottonseed can reach nearly 10 million tons, except for a small part reserved for seeding, and the rest is used for oil extraction. The annual production of cottonseed meal reaches hundreds of tons. Among them, the cottonseed meal used for feed only accounts for about 15%, and most of the rest is used as fertilizer. The protein content in cottonseed meal accounts for about 30%-45%, which is equivalent to soybean meal, and the protein content is 5-8 times higher than that of rice and wheat. Cottonseed meal contains 17 kinds of amino acids, of which the content of lysine is low at 1.48%, while the content of arginine is high at 3.6%-3.8%. The ratio of lysine to arginine far exceeds the ratio of...

AI Technical Summary

Problems solved by technology

In addition, the phenol group of free gossypol containing active aldehyde groups and active hydroxyl groups or the quinone group of the oxidation product of phenol group can interact with the active groups of protein amino acid residues in feed (such as ε-amino group of lysine, ε-amino group of cysteine, etc.) thiol) to form an insoluble complex, and can also bind to proteolytic enzymes in the digestive tract to inhibit their activity, thereby reducing protein utilization