Studies on distribution and accumulative dynamic variation of bioactive components in Eucommia ulmoides
- VernacularTitle:杜仲中活性成分的分布及其累积动态变化规律的研究
- Author:
Xiangyang QI
;
Weijun CHEN
;
Shenghua ZHANG
;
- Publication Type:Journal Article
- Keywords:
Eucommia ulmoides Oliv;
bioactive components;
distribution;
dynamic variation
- From:
Chinese Traditional and Herbal Drugs
1994;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Object To study the effects of districts, seasonal variations and treatments in past harvest on the five main bioactive components in the barks and leaves of Eucommia ulmoides Oliv Methods The contents of them in the bark and leaves of E ulmoides were determined by RP HPLC Results The contents of (+) pinoresinol di O ? D glucopyranoside (PG), (+) syringaresinol di O ? D glucopyranoside (SG), chorgenic acid (CGA), geniposide (GP), geniposidic acid (GA) among the sample of E ulmoides from different growing districts were obvious difference Besides, the amount of different bioactive components in the same sample had no correlation Seasonal variation and different past harvest treatments had great influence on the bioactive component in E ulmoide. Based on the monthly variation of their main bioactive component, the suitable seasons for harvest of the barks and leaves of E ulmoides are April, May and July respectively, and intracellular enzymes in the fresh barks and leaves collected should be inactivated imediately before drying to avoid lossing the bioactive components In addition, between the barks and leaves of E ulmoides, the major bioactive component had great differences, but had complementarity Conclusion The districts, seasonal variatons and past harvest treatments have great effects on the contents of five main bioactive components in the barks and leaves of E ulmooides, and the barks couldn't be replaced by the leaves simply
