Preparation of cotton-seed polypeptide with anti-oxidant function

Abstract

A process for preparing the antioxidizing cottonseed polypeptide powder used as the nutrient intensifier for improving immunity includes such steps as mixing cottonseed protein with distilled water, grinding, regulating pH value and temp, adding alkaline proteinase, enzymolyzing, adding flavouring proteinase, regulating pH value and temp, enzymolyzing, boiling for deactivating enzyme, cooling, filtering, vacuum concentrating, and spray drying.

Description

technical field [0001] The invention relates to a treatment method of cottonseed protein, in particular to a method for preparing a dry polypeptide powder with anti-oxidation function by using the cottonseed protein. The dry polypeptide powder belongs to functional and nutritious food. Background technique [0002] Cotton is one of the important crops in the world. Cottonseed is rich in more than 30% protein. Its amino acid composition is complete, the ratio is reasonable, and its nutritional value is close to that of bean protein. It is a very important plant protein resource. Biologically active peptides are polypeptides with amino acid sequences, which have special physiological activities on the life activities of biological organisms. Certain low-peptides can not only provide the nutrients needed for human growth and development, but also have the functions of preventing and treating diseases and regulating human physiological functions, such as lowering blood pressure,...

AI Technical Summary

Problems solved by technology

There are many techniques for enzymatically hydrolyzing protein. Some use a single type of enzyme to hydrolyze, which takes a long time and consumes energy. As the hydrolysis time prolongs, the activity of the hydrolyzate gradually loses; some use multiple types of Enzymes are hydrolyzed at the same time, but by choosing different types of enzymes and their combinations, and using different hydrolysis conditions, the hydrolysates obtained are different, and the properties of the hydrolysates are also different; in addition, the protein polypeptides produced by enzymatic methods are often accompanied by bitter taste , which is also the main factor restricting the industrial production of polypeptides by enzymatic method

For the enzymatic production of cottonseed polypeptide, there are few reports in the literature at home and abroad, and the method of the present invention uses the compound enzymatic hydrolysis technology to hydrolyze cottonseed protein isolate to prepare cottonseed polypeptide with antioxidant activity.