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박구부(G . B . Park),강승환(S . H . Kang),김영직(Y . J . Kim),이한기(H . G . Lee),김영환(Y . H . Kim) 한국축산학회 1988 한국축산학회지 Vol.30 No.2
This experiment was conducted to investigate meat protein of loin and thigh muscles of Korean native goats during postmortem storage at 4℃ for 7 days. Three heads weighting 15 to 20Kg were used. Protein extractability, sacoplasmic protein extractability and myofibril fragmentation index were measured. The results obtained were as follows: 1. The proteins extracted were estimated to be 36-39% with KCl-Borate solution, 7-9% with Guba-Straub solution and 4-6% with weak salt solution. The protein solubility increased for 2 days and almost no change was observed after 2 days. 2. Non-protein nitrogen content tend to be increased during postmortem storage. Changes of non-protein nitrogen content in loin was higher than that of thigh in fresh-muscle. 3. The sarcoplasmic protein extractability was decreased for 2 days in both parts of regions and almost no change was observed after 2 days. 4. The myofibril fragmentation index of :he loin muscles was higher than that of the thigh muscle during postmortem storage. The myofibril fragmentation index in both parts of muscles were rapidly increased for 2 days and gradually increased thereafter.