The effect of such factors as dosage of papain, concentration of protein, time of reaction, acidity, temperature on hydrolytic ratio of protein in pearls by papain was studied.

The solutions of 2,4-dinitrophenol,potassium azide,sodium azide and papain were injected into the phloem exudating wounds in Ricinus communis L respectively with microinjector in order to study the changes of exudation rate,concentrations of sucrose and potassium.

Study on hydrolysis dynamics model of protein from Harengula zunasi B. by papain;

Preparation of nylon-based affinity membranes and their application on purification of papain;

Papain tenderizing for rejected layer during salting and air-drying processing;

Gene cloning of chymopapain and construction of the secreting recombinantvector in Pichia pastoris;

According to L9(34) orthogonal experiment,rennet,chymopapain and mucor pusillus chymosin were chosen for the production of chymosin casein.

Papain and chymopapain can coagulate soybean protein isolate(SPI), both of them are cysteine proteinases.

Two enzymes having the different hydrolytic products with regenerated chitin as substrate that show that the chitinase is an endo enzyme and the papaya lysozyme is an exo enzyme.