The Degradation of Muscle Protein of Chinese Shrimp (Fenneropenaeus chinensis)during Refrigerated Storage
The degradation of muscle protein of Chinese shrimp (Fenneropenaeus chinensis) during refrigerated storage was investigated by analyzing muscle protein composition and protein patterns.Changes in protein composition and patterns indicated the degradation of the shrimp muscle protein during refrigerated storage.The contents of myofibrillar protein and stroma significant decreased with storage,and the contents of sarcoplasmic protein slight decreased,while the contents of alkali-soluble protein increased during the storage.MHC,actin,tropomysion,troponin I,troponin C and the proteins of 30~31 ku,6.5 ku showed a different degradation during the storage.The density of 23~25 ku protein band in total soluble proteins,176~178 ku protein band in water soluble proteins,67~68 ku protein band in low-salt soluble proteins strong correlations with storage time,so they may be the potential protein indicators of freshness.
Chinese shrimprefrigerated storagemuscle proteindegradation