Tannins from Hamamelis virginiana: identification of proanthocyanidins and hamamelitannin quantification in leaf, bark, and stem extracts

B Vennat; H Pourrat; M P Pouget; D Gross; A Pourrat

doi:10.1055/s-2006-962499

Tannins from Hamamelis virginiana: identification of proanthocyanidins and hamamelitannin quantification in leaf, bark, and stem extracts

Planta Med. 1988 Oct;54(5):454-7. doi: 10.1055/s-2006-962499.

Authors

B Vennat¹, H Pourrat, M P Pouget, D Gross, A Pourrat

Affiliation

¹ Laboratoire de Pharmacie Galénique et de Pharmacotechnie, Faculté de Pharmacie, Clermont-Ferrand Cedex, France.

PMID: 17265314
DOI: 10.1055/s-2006-962499

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.