2-HYDROXYNICOTIANAMINE, PROCESS FOR PRODUCING THE SAME AND ANGIOTENSIN CONVERTING ENZYME INHIBITOR, HYPOTENSIVE DRUG AND HEALTH FOOD

摘要

It is intended to provide 2"-hydroxynicotianamine; a process for producing 2"-hydroxynicotianamine which comprises extracting a buckwheat sample and then subjecting the extract to ion exchange chromatography with the use of an anion exchange resin to thereby give a fraction having an activity of inhibiting angiotensin converting enzyme; novel materials (an angiotensin converting enzyme (ACE) inhibitor, a hypotensive drug and a health food) having an ACE inhibitory activity which contain 2"-hydroxynicotianamine; a process for producing such a novel material; and an angiotensin converting enzyme inhibitor and a hypotensive drug containing the novel material as the active ingredient and a health food containing the novel material.