초록

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Abstract ▼ AI-Helper

This experiment was carried out to compare the change of muscle protein compositions, amino acid compositions of muscle protein, and free amino acid compositions by age of the Israeli strain of common carp, Cyprinus carpio nudus. Protein compositions of the muscle were: sarcoplasmic protein $25...

This experiment was carried out to compare the change of muscle protein compositions, amino acid compositions of muscle protein, and free amino acid compositions by age of the Israeli strain of common carp, Cyprinus carpio nudus. Protein compositions of the muscle were: sarcoplasmic protein $25.8-27.2\%$, myofibrillar protein $62.3-56.2\%$, residual intracellular protein $9.6-13.2\%$ and stroma $2.3-2.9\%$. In between 1 year and 3 years, there were differences as follows; myofibrillar protein in 1 year was much than 3 years, and other proteins in 3 years were much than 1 year. By SDS-polyacrylamide gel electrophoresis, sarcoplasmic protein of the samples in 1 year an 3 years were composed of 11 subunits and 10 subunits, respectively. And appeared 210,000 dalton component in 1 year but did not appeared in 3 years. Myofibrillar protein was composed of 23 subunits in both 1 year and 3 years but the differences of subunits by age were not observed. No differences were observed by age in the composition of myofibrillar protein and residual intracellular protein. Amino acid composition of muscle protein in both 1 year and 3 years were no differences to each other, but the contents of glutamic acid, aspartic acid, lysine were higher than other amino acids. The amount of total free amino acid in 1 year was much than in 3 years.