A kind of distiller's grain cottonseed meal soluble protein powder and preparation method thereof

Abstract

The invention discloses a distiller's grain cottonseed meal soluble protein powder and a preparation method thereof, which is composed of a certain proportion of cottonseed meal, distiller's grains, water, ferrous sulfate, calcium hydroxide, alkaline protease and compound flavor protease, and the steps are: ( 1) Mix cottonseed meal, distiller's grains, ferrous sulfate and calcium hydroxide evenly, impregnate, fumigate at 121°C, 0.14-0.18Mpa, and detoxify cottonseed meal; (2) Add water to the fumigated cottonseed meal and distiller's grains for refining , have mixed slurry. (3) Adjust the pH value of the mixed slurry, add alkaline protease, and enzymatically hydrolyze; adjust the pH value of the slurry again, add compound flavor protease, enzymolyze, and inactivate the enzyme to obtain the enzymatic hydrolyzate; (4) Spray dry the enzymatically hydrolyzate : The spray flow rate is 20-30mL / min, the feed temperature is 36-41°C, and the air inlet temperature is 160-190°C. The distiller's grain cottonseed meal soluble protein powder prepared by this method is easy to digest, has good flavor and high solubility index.

Description

technical field [0001] The invention belongs to the technical field of food, and more specifically relates to a soluble protein powder of distiller's grains and cottonseed meal, and also relates to a preparation method of the soluble protein powder of distiller's grains and cottonseed meal. Background technique [0002] Distiller's grains, also known as red grains, distiller's grains, dregs, etc., are the residues left after brewing rice, wheat, sorghum, etc. Distiller's grains are rich in crude protein, crude fat, minerals and cellulose, which have high development value. Starch is mainly consumed in the process of grain wine making, and most of the protein remains in the distiller's grains; a certain amount of ethanol still remains in the distiller's grains after distillation. [0003] Cottonseed meal is a by-product of cottonseed oil extraction. The cake obtained from cottonseed oil extraction contains about 40% protein, and the amino acid types of protein are relatively...

AI Technical Summary

Problems solved by technology

However, because cottonseed meal contains toxic component gossypol, it will have adverse effects on the growth, development and reproduction of the organism, limiting its consumption as a protein source, thus making this precious resource unable to be fully utilized. Most cottonseed meal is only used as fertilizer

At present, the utilization rate of cottonseed meal in my country is less than 15%, and at the same time, the protein source in my country is seriously insufficient. Therefore, effective detoxification of cottonseed meal is required to make full use of cottonseed meal protein.

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