초록

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Abstract ▼ AI-Helper

Compositions of protein and amino acid in the muscle of crucian carp, Carassius carassius, and snakehead, Channa argus, were determined by amino acid autoanalyzer, and the protein subunits composed of sarcoplasmic and myofibrillar proteins were also analyzed by sodium dodecylsulfate (SDS) polyacryla...

Compositions of protein and amino acid in the muscle of crucian carp, Carassius carassius, and snakehead, Channa argus, were determined by amino acid autoanalyzer, and the protein subunits composed of sarcoplasmic and myofibrillar proteins were also analyzed by sodium dodecylsulfate (SDS) polyacrylamide gel electrophoresis. The crucian carp muscle contained about $14.7\%$ of protein, and the protein was composed of $32.6\%$ in sarcoplasmic, $62.0\%$ in myofibrillar, $4.9%$ in alkali soluble and $0.6\%$ in stroma protein. The snakehead muscle, on the other hand, contained about $16.1\%$ of protein, and $30.7\%,\;64.1\%,\;4.7\%\;and\;0.4\%$ in the above order. The sarcoplasmic and myofibrillar proteins were composed of 10 and 19 subunits respectively, in the crucian carp, and 12 and 18 subunits in the snakehead. The total amino acid compositions in the muscle of the crucian carp and snakehead were found to be very similar except lysine and glutamic acid. The major amino acids of their muscle protein were lysine, glutamic acid, arginine and aspartic acid in order. In free amino acid content of the crucian carp, histidine occupied $52\%$ of the total free amino acid, and glutamic acid, glycine and taurine did $85\%$ in case of snakehead.