Planta Med 1988; 54(5): 454-457
DOI: 10.1055/s-2006-962499
Papers

© Georg Thieme Verlag Stuttgart · New York

Tannins from Hamamelis virginiana: Identification of Proanthocyanidins and Hamamelitannin Quantification in Leaf, Bark, and Stem Extracts

B. Vennat1 , H. Pourrat2 , M. P. Pouget1 , D. Gross1 , A. Pourrat1
  • 1Laboratoire de Pharmacie Galénique et de Pharmacotechnie, Faculté de Pharmacie, 28 Place Henri-Dunant, F-63001 Clermont-Ferrand Cedex, France.
  • 2Laboratoire de Pharmacognosie et Microbiologie Industrielle, Faculté de Pharmacie, 28 Place Henri-Dunant, F-63001 Clermont-Ferrand Cedex, France.
Further Information

Publication History

1987

Publication Date:
24 January 2007 (online)

Abstract

The tannins in leaf, bark, and stem extracts of Hamamelis virginiana were analyzed. Four proanthocyanidins were isolated by HPLC. One was a procyanidin polymer containing only one type of flavanol unit; the other three were polymers of procyanidin and prodelphinidin containing two types of flavanol units. A method of assay of hamamelitannin showed the bark extract to be 31 times richer in hamamelitannin than the leaf extract and 87 times richer than the stem extract.