In recent years, an important research field has been discovered that collagenpeptide has a great effect on human body, particularly, has characters and functionswhich can be applied into biomedical and biotechnological field. In this thesis,collagen peptide degradated by complex enzyme was studied and systemic andintegrate techniques were set up. It was involved several research aspects: establizatingextraction process of complex enzyme in collagen peptide, and its separation andpurification were...