Digestion of Peptides from Sardine Muscle That Inhibit Angiotensin I Converting Enzyme by Intestinal Enzymes of Pigs

Autor: Hideki Matsuda, Yutaka Osajima, Hideo Morita, Toshinori Nagaoka, Katsuhiro Osajima, Toshiyuki Ishizaki
Rok vydání: 1992
Předmět:
Zdroj: Journal of the agricultural chemical society of Japan. 66:1645-1647
ISSN: 1883-6844
0002-1407
Popis: Three peptides (I:Leu-Lys-Leu, II:Val-Lys-Ala-Gly-Phe, and III: Lys-Val-Leu-Ala-Gly-Met) from a hydrolyzate of sardine muscle and that inhibited angiotensin I converting enzyme were digested with the intestinal fluid of pigs. The IC50 values of II and III were decreased to 56% and 66% of the original value, respectively, after digestion. Peptide I was not digested. Five peptide fragments were isolated from the peptide digests by high-pressure liquid chromatography. By the Edman procedure, peptide II digest was found to contain the fragments Val-Lys-Ala-Gly and Gly-Phe, and peptide III digest was found to contain the fragments Ala-Gly-Met, Lys-Val-Leu-Ala-Gly, and Lys-Val-Leu.
Databáze: OpenAIRE