Study on Various Enzymatic Hydrolysis of Chicken Skin for Collagen Peptides

The collagen peptides from chicken skin has been extracted by using enzyme method. In addition,the effects of enzyme types,enzyme concentration,hydrolysis time,hydrolysis temperature and pH on peptide hydrolysis were studied,and the extraction conditions were optimized by orthogonal experiment. The results shows that the optimum enzyme was papain add trypsin add flavorzyme and the optimum concentration of enzyme was 0.9%,the time of enzyme hydrolysis was 3 hours,the temperature of enzyme hydrolysis was 45 ℃ and pH was 7.