北美金缕梅中的单宁：原花青素的鉴定以及叶、树皮和茎提取物中北美金缕梅鞣质的定量分析

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

作者信息

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

机构信息

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

出版信息

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

DOI:10.1055/s-2006-962499

PMID:17265314

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.

摘要

对北美金缕梅的叶、树皮和茎提取物中的单宁进行了分析。通过高效液相色谱法分离出了四种原花青素。一种是仅含一种黄烷醇单元的原花青素聚合物；另外三种是含有两种黄烷醇单元的原花青素和原花青定的聚合物。一种金缕梅鞣质的测定方法表明，树皮提取物中的金缕梅鞣质含量比叶提取物高31倍，比茎提取物高87倍。