Procyanidins from tormentil : Antioxidant properties towards lipoperoxidation and anti-elastase activity

Procyanidins extracted from the rhizomes of Potentilla tormentilla were fractionated according to their degree of polymerization by chromatography on Sephadex LH20[○!R]. Dimers and trimers displayed the highest anti-radical activity towards lipoperoxidation. Pentamers and hexamers possessed the most marked anti-elastase properties.