1996 年 19 巻 1 号 p. 146-148
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.