みそ, しょう油のPeptidesに関する研究 : (第6報) : 豆みそ低分子Peptidesのグループ分画とその性状

概要

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Characteristic properties of the lower peptides in Mame-Miso were studied in the aspect of their amino acid constitution.1) After the dialysis, the lower peptides which has passed through the colum n of Dowex 50 X-16 (H) were separated by adsorption on the Dowex 50 X-4 (H) ion exchanger. The average length of the separated lower peptides was 3.85.2) Lower peptides were fractionated into four groups with the Amberlite IR-4B, IRC-50 ion exchanger, and their distributive nitrogen percentages in the strongly acidic, weakly acidic, neutral and basic fractions were 18.1,39.5,33.0 and 8.2,respectively. The molar contents of aspartic and glutamic acids were 72.9% in the strongly acidic, 61.5% in th weakly acidic and 27.3% in both neutral and basic peptides.It may be concluded from these results that, acidic peptides in which approximately 60% of all the lower peptides are comprised contain aspartic and glutaminc acids in one molecule of peptide. It may be suggested also that peptides containing either aspartic or glutaminc acid are abundant in the neural and basic lower peptides in Mame-Miso.
社団法人日本生物工学会の論文
1969-08-25