種子のアミノ酸組成に関する研究 I

イネ科種子のアミノ酸

抄録

The comparison of contents of the eighteen amino acids of the seeds are presented in this report. The seeds of thirty one species belonging to Gramineae covering Pharoideae, Pooideae, Eragrostoideae and Panicoindeae were investigated with respect to their amino acid contents. Complete hydrolysates of seed powder were subjected to the microbiological assay using lactic acid bacteria. The results obtained were discussed from the point of view of their taxonomic relationships.
It was indicated that the conspicuous relationship existed between the amino acid pattern of the seed and the plant species. The subfamily Panicoideae showed an amino acid pattern characterized by high alanine and leucine levels, in marked contrast to those observed in other subfamilies. The seed of Panicoideae also showed lower lysine and arginine levels as well as those of Eragrostoideae when compared with other two subfamilies. Among the species belonging to Pooideae, differences in amino acid pattern being considered to characterize the tribes were also observed. Pharoideae and Pooideae gave similar pattern with exceptions of lower glutamic acid and proline level, and of higher aspartic acid level in the former.