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Updated: Jul 17, 2026
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Quantitative 31P NMR Analysis of Lignins and Tannins
Published on: August 2, 2021
Tannins from Hamamelis virginiana: identification of proanthocyanidins and hamamelitannin quantification in leaf,
B Vennat1, H Pourrat, M P Pouget
1Laboratoire de Pharmacie Galénique et de Pharmacotechnie, Faculté de Pharmacie, Clermont-Ferrand Cedex, France.
Planta Medica
|October 1, 1988
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.
