In this work, the ACE inhibitory capacity of four purified
monomers [(þ)-catechin, ()-epicatechin, (þ)-catechin-O-gallate,
and ()-epigallocatechin] and four procyanidin extracts of grape
seeds have been measured. Such natural extracts have been previously
characterized in terms of their average degree of polymerization,
total content of procyanidins, and monomers abundance