Angiotensin-converting enzyme inhibitory peptides

【Task】 Hardly degraded by digestive enzymes when ingested, hardly lost ACE inhibitory activity in the body, to provide a tripeptide having an ACE inhibitory activity. A From decomposition product by thermolysin sesame, having ACE inhibitory activity, they found three tripeptides having hypotensive effect in animal experiments. Tripeptides of the invention, Leu-Ser-Ala, has the amino acid sequence of Val-Ile-Tyr or Leu-Val-Tyr, having angiotensin converting enzyme inhibitory activity.