| 摘要 |
PROBLEM TO BE SOLVED: To clarify constituents of ethanol-soluble components in a solution obtained by removing the undecomposed high-molecular weight fraction abundant in hydrophobic amino acids in a treated liquid (decomposition liquid) obtained by treatment of a soybean protein with a protease, and to clarify usefulness of the constituents. SOLUTION: A peptide prepared from an aqueous solution, obtained by treating a soybean protein material with a protease and removing the undecomposed high-molecular weight fraction abundant in insoluble hydrophobic amino acids, is a Trp-containing peptide having a specific amino acid sequence and exhibits inhibiting activities on an angiotensin I-converting enzyme (ACE) and suppressing actions on deterioration in human erythrocyte deformation ability. The peptide is formulated into a medically effective composition which is utilized as a raw material of a health food and a medicine to broaden applications of a soybean. COPYRIGHT: (C)2011,JPO&INPIT |
