| Popis: |
The constituents of the amino acids composed of the protein in the exoskeletons of the crustacea,the prawn, Peneaus japonicus, the crab, Portuuns trituberculatus, and the lobster, Panulirus japonicus wereanalyzed quantitatively. Asparatic acid, glutamic acid, alanine, glycine were in general featured byrelatively high contents and the contents of proline, valine, and serine were also high, but the contents ofthe basic amino acids were low. The constituents of the amino acids composed of the protein in theexoskeletons of the crustacea were similar to those of amino acid patterns of elastin.The compositions of the amino acids in the three parts of the exoskeletons of the crustacea : Theamino acids in the carapaces, abdomens and pleopods, and telsons of the exoskeletons, were alsoanalyzed, and compared each other. In the hard carapaces the contents of asparatic acid, glutamic acidand proline were high, in the soft parts of the abdomens and telsons the contents of glycine and thebasic amino acids were also relatively high. |
