Changes of calpain activity in postmortem meat of pig

Calpain activity changes of wild hybrid pig and home white pig were investigated, and SDS-PAGE analyzsis on extracting solutions of whole protein in the meat was done. Results indicate that the crossbred wild pigs' activities of calpains is more higher, however, the rate of autolysis expressing the activity of calpains at the early stage is very slower; The map of SDS-PAGE photographs show that proteolysis of crossbred wild pig is slower than that of home white pig. Also its small molecular material degraded comparatively slower from SDS-PAGE map after 40-hour cold storage.