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Procyanidins from tormentil: fractionation and study of the anti-radical activity towards superoxide anion
1Laboratoire de Pharmacie Galénique et Pharmacotechnie Industrielle, UFR Pharmacie, Clermont-Ferrand, France.
Biological & Pharmaceutical Bulletin
|December 1, 1994
Abstract:
A standardised water-soluble extract was prepared from rhizomes of Potentilla tormentilla. The procyanidins in the extract were fractionated according to their degree of polymerisation by chromatography on Sephadex LH20. The anti-radical activities of the different fractions towards superoxide anion were compared when pentamers and hexamers were found to be the most active.