Angiotensin I converting enzyme inhibitor wheat bran, barley bran, rice bran from

摘要

PPROBLEM TO BE SOLVED: To economically and efficiently provide a polypeptide having activity for inhibiting angiotensin-I converting enzyme from wheat bran, barley bran and rice bran without adding protease or amylase, and further without adding a material harmful to the human body, and to provide a method for producing the polypeptide having hypotensive functions. PSOLUTION: The polypeptide having the activity for inhibiting the angiotensin-I converting enzyme is obtained by adding and mixing at least one kind of powder raw material selected from the group consisting of wheat flour at least containing the wheat bran, barley flour at least containing the barley bran and rice flour at least containing the rice bran, to and with water or a buffer solution, regulating the pH of the water or the buffer solution after the addition and mixing so as to be from 3.05 to 3.95, and reacting the product at 30-45°C for at least 4 hr or more. The method for producing the polypeptide having the hypotensive functions is also provided. PCOPYRIGHT: (C)2009,JPO&INPIT