2026-03-12T02:11:27Z https://fra.repo.nii.ac.jp/oai

oai:fra.repo.nii.ac.jp:02005285 2026-01-22T05:35:11Z 12:14:1716951104833

魚肉中のペプチドの探索 A Search for Low Molecular Weight Peptides in Fish Muscle Konagaya, Shiro 小長谷, 史郎 コナガヤ, シロウ Konagaya 小長谷 コナガヤ Shiro 史郎 シロウ Mogi, Shigeru 茂木, 繁 モギ, シゲル Mogi 茂木 モギ Shigeru 繁 シゲル metadata only access The presence of some low molecular weight peptides except for β-alanyl dipeptides in fish muscle has been speculated by the fact that free amino acids in the muscle extract slightly increased in amount after complete hydrolysis. This study was undertaken to comfirm the presence of low molecular weight peptides in fish muscle. Dorsal muscle of yellowfin tuna Thunnus albacares was used as sample. Water extracts of the tuna muscle from which protein was removed by several different methods were separately subjected to gel filtration on a Sephadex G25 column and the eluate was examined for the presence of peptides. No peptide except for β-alanyl dipeptides could be detected in a water extract deproteinized by trichloroacetic acid, but in that deproteinized by heating, some peptides differing in molecular weight from 2 × 10³ to 1 × 10⁴ were detected. Their amino acid composition was similar to that of parvalbumin, but differed from that in the very small content of phenylalanine. Other than these peptides, at least two kinds of peptides having much lower molecular weight were found. One of them gave mainly glycine, glutamic acid, methionine and phosphoserine (or cysteic acid) on complete hydrolysis, and the other gave chiefly glycine, aspartic acid and phosphoserine (or systeic acid). Since these peptides were not thoroughly purified, a further work is necessary for characterization. 01/10/02 10:02 東海区水産研究所 Tokai Regional Fisheries Research Laboratory 1987-02-25 jpn departmental bulletin paper https://fra.repo.nii.ac.jp/records/2005285 tokai_k_121_69 https://agriknowledge.affrc.go.jp/RN/2010362003 日本農学文献記事索引(agriknowledge) AN00156834 0040-8859 東海区水産研究所研究報告 Bulletin of Tokai Regional Fisheries Research Laboratory 121 14 69 82