Polypeptide is a compound formed by the bonding of α-amino acids with peptide bonds, and it is the intermediate product of protein hydrolysis. The compound formed by dehydration and condensation of two amino acid molecules is called dipeptide. By analogy, there are tripeptide, tetrapeptide, pentapeptide and so on.
Bioactive peptides produced by enzyme method
China is the main producing area of bioactive peptides produced by enzyme method, and represents the level and trend of peptide research, development, production and innovation in the world today. The food-grade plant protease needed by human body is used to degrade the food protease commonly eaten by human body, and the small molecular active polypeptide is obtained, which is the bioactive peptide produced by enzyme method.
Solid phase synthesis and liquid phase synthesis
In Silicon Valley, the United States, there is a solid phase synthesis method, liquid phase synthesis method to produce peptides. They mainly buy amino acids produced by some fine chemical plants in the world, and then use them as raw materials to synthesize certain monopeptide directionally, which is an intermediate of pharmaceutical raw materials, which is mainly used in western medicine formula to enhance the efficacy, so that the absorption rate and absorption rate of drugs can be enhanced.
Acid hydrolysis or alkaline hydrolysis
The “soybean polypeptide” produced by acid hydrolysis or alkaline hydrolysis in Japan belongs to “food additive”, which is mainly used in food for the elderly and children, so as to enhance the absorption of food nutrition by these two groups of people. Japan and China are two countries with “soybean peptides” in the world. However, Japan and China use different raw materials, hydrolysis and product properties. Soybean meal is a raw material used in Japan, acid method is a hydrolysis method, it is difficult to produce all the peptide acid chemicals, and there is bitterness, need to use activated carbon adsorption, debittering, but the invasion of activated carbon to peptides is inevitable.
