Polyphenolic compositions and angiotensin-I-converting enzyme inhibitory properties of common green leafy vegetables: A comparative study.

This study compared the phenolic compositions of common green leafy vegetable extracts from (VA), (TO), (TT), and (AH) and their effects on the angiotensin-I-converting enzyme (ACE) and cisplatin-induced malonylaldehyde (MDA) production in an isolated rat kidney homogenate. HPLC confirmed the presence of phenolic compounds in the extracts. Furthermore, all extracts inhibited ACE activity dosedependently; however, the extract from VA exhibited the highest ACE activity while TT exhibited the least.