Optimization of hydrolysis technology of corn gluten meal by response surface methodology

The corn polypeptide with high degree of hydrolysis( DH) was prepared by alkaline protease,with corn protein as raw material and degree of hydrolysis as detecting index by mono- factor analysis and response surface methodology.The results showed that under the optimal conditions: substrate concentration 23 g / L,proteases dosage 3.5%,hydrolysis temperature 49.7 ℃,hydrolysis time 4 h and p H 9.0,the degree of hydrolysis was 27.18%.