| 摘要 |
The invention is intended to provide a novel biologically non-degradable peptide which is easily absorbed but hardly degraded in vivo when administered via, for example, the oral route and expected as effectively exerting functions such as a hypotensive effect in vivo; an ACE inhibitor using the peptide; and a drug or a functional food expected as effectively exerting a hypotensive effect in vivo. The biologically non-degradable peptide as described above is a dipeptide or a tripeptide having Pro at its carboxy end selected from the group consisting of Ile-Pro, Glu-Pro, Arg-Pro, Gin-Pro, Met-Pro and Ser-Pro-Pro. |
