Protease is one of the most important industrial enzyme preparations, which can catalyze the hydrolysis of proteins and peptides. It is widely found in animal viscera, plant stems, leaves, fruits and microorganisms. Proteases are widely used in cheese production, meat tenderization and plant protein modification.
In addition, pepsin, chymotrypsin, carboxypeptidase and aminopeptidase are all proteases in the human digestive tract. Under their action, proteins ingested by the human body are hydrolyzed into small molecules of peptides and amino acids.