蜂胶
DPPH
化学成分
植物
肉桂酸
化学
皮诺森布林
生物
有机化学
类黄酮
抗氧化剂
作者
Roumen Christov,Boryana Trusheva,Milena Popova,Vassya Bankova,Michel Bertrand
标识
DOI:10.1080/14786410500056918
摘要
Abstract The chemical composition of propolis from two regions in Canada was studied: Boreal forest and Pacific coastal forest that lay outside the area of distribution of Aigeiros poplars, the usual propolis source plants. In the sample from Victoria, p-hydroxyacetophenone, benzyl hydroxybenzoate and cinnamic acid were the major components, accompanied by significant amounts of dihydrochalcones, which allowed the identification of its plant source: Populus trichocarpa of Section Tacamahaca. Three dihydrochalcones were new for propolis. The sample from Richmond was characterized by large amounts of p-coumaric and cinnamic acid, typical for poplars of Section Leuce, subsection Trepidae, its plant source was identified as P. tremuloides. Both samples showed good radical scavenging activity against DPPH. Obviously, Northern type propolis is a promising potential source of biologically active substances and deserves further investigation. Keywords: PropolisDihydrochalcones Populus Acknowledgements The authors wish to thank Mr. Jean Porret, Director of "Service d'action humanitaire et communautaire de l'Universie de Montreal" for the propolis sample.
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