In order to evaluate the suitable enzymolysis condition of soybean and shrimp meal peptide,the optimum parameters of enzyme levels([E],U/g),substrate concentration([S],W/V),pH value,reactive temperature(T,℃)and reaction time(t,h)of alkali protease,acidic protease,and neutal protease to hydrolyze the mixture of dehulled soybean meal(70 %)and shrimp meal(30 %)were studied individually.

Preparation and application of soybean polypeptides;

Using AN as standards, the optimized conditions of one enzyme hydrolysis, the order of double enzymes hydrolysis and the best condition of low molecular weight polypeptides have been found , with capillary electrophoresis,the molecular weight of soybean polypeptides were determined.

As a new prodution of soybean,soybean polypeptides has specially properties and physiologically function.

Preparation of soybean peptides by composite proteases;

Study on the extraction technique of soybean peptides by triple-enzyme composite hydrolysis;

Properties and application research state of soybean peptides;

Optimum research of decolouring technology of soybean peptide;

Studies on optimizing soybean meal fermentation conditions to produce soybean peptides by aspergillus niger with RSM;

Purification and antioxidant activity of soybean peptide;