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Planta Med 1988; 54(5): 454-457
DOI: 10.1055/s-2006-962499
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
Weitere Informationen
Publikationsverlauf
1987
Publikationsdatum:
24. Januar 2007 (online)
![](https://www.thieme-connect.de/media/plantamedica/198805/lookinside/thumbnails/10.1055-s-2006-962499-1.jpg)
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.