湖南大学学报（自然科学版）2012，Vol.39Issue(5)：73-76,4.
桉叶中2种没食子单宁结构鉴定及其抗氧化研究
Two Tautomerizing Gallotannins from Eucalyptus Leaves:Purification,Structure Characterization and Their Antioxidant Activity
摘要
Abstract
The aqueous ethanolic extract of Eucalyptus leaves were used as the antioxidant in food additives, but it was not all clear of antioxidative components. In this paper, two tautomerizing gallotannins with strong antioxidant activity were isolated from the eucalyptus leaves extract. The antioxidant activities of the two components were more than two times that of the standant antioxidant Trolox (ORAC index). The chemical structures were determined by HPLC, ' H-NMR and 13C-NMR. The results have shown that one is 3-galloyl-4,6-HHDP-D-glucose (Gemin D), and the other is 2,3,4,6-two-HHDP-D-glucose(Pedun-culagin), and the former component is the first to be isolated from this plant.关键词
桉叶/没食子单宁/结构鉴定/抗氧化活性Key words
eucalyptus leaves/ gallotannins/ structure characterization/ antioxidant activity分类
农业科技引用本文复制引用
肖苏尧,王俊亮,陈运娇,汤杰,陈洪璋,曹庸..桉叶中2种没食子单宁结构鉴定及其抗氧化研究[J].湖南大学学报（自然科学版）,2012,39(5):73-76,4.基金项目
国家自然科学基金资助项目(31100433) （31100433）
林业重大公益性行业科研专项(201104003-03) （201104003-03）
