Second,damage can be attributed to an imbalance in the endogenous protease/antiprotease equilibrium,promoting tissue hydrolysis that leads to alveolar septal rupture by digestion of septal matrix proteins.

Optimization of technology parameters of trypsinase directly hydrolyzed milk;

Modification of soy whey protein by trypsinase;

Technological conditions for the preparation of holothurian peptides by trypsinase;

Study on relativity of psychrotrophic bacteria count and extracellular proteinase activity in raw milk;

Studies on the preparation of mucor proteinase by solid state fermentation;

Texture properties of soymilk coagulated by an alkaling proteinase-Alcalase;

Dynamics model of controlled hydrolysis of proteins from cod skin collagen by trypsin;

Enzymatic hydrolysis of corn germ protein with trypsin;

The rough isolation of the bioactive peptides obtained from the casein hydrolyzed by trypsin;

Mutation breeding of brewing yeast with lower-level protease A and pilot scale fermentation;

Purification and Characters of Protease A Inhibitor from Potato;

The results showed that there were four enzymes(trypsase,papain,protease A,protease M,peptidase R) that can hydrolyze the milk protein into hydrolysates.