【作者】 吕海鹏； 林智； 谭俊峰； 郭丽；

【Author】 LV Haipeng,LIN Zhi,TAN Junfeng,GUO Li (Tea Research Institute,Chinese Academy of Agricultural Sciences,Hangzhou 310008,China)

【机构】 中国农业科学院茶叶研究所；

【摘要】 采用HPLC制备色谱等分析了普洱茶乙酸乙酯提取物E8组分的化学成分,并通过LC/MS和NMR等对制备得到的化合物进行了结构鉴定。结果表明,从E8组分中分离鉴定出5个化合物,分别为3’,4’,5-三羟基-7-甲氧基黄酮、3’,4’,5,7-四羟基黄酮(木犀草素)、槲皮素-3-O-β-D-葡萄糖甙、3’,4’,7-三羟基-5-甲氧基黄酮-7-O-β-D-葡萄糖甙和3’,4’,7-三羟基-5-甲氧基黄酮。更多还原

【Abstract】 The chemical components of E8 fraction of ethyl acetate extract from Pu-erh tea was analyzed by HPLC preparative chromatography and its chemical structure was also identified by LC-MS and NMR.Results showed that five compounds were identified as follows:3’,4’,5-Trihydroxy-7-Methoxyflavone 、 3’,4’,5,7-Tetrahydroxyflavone (Luteolin) 、 Quercetin-3-Oβ-D-glucopyranoside、3’,4’,7-Trihydroxy-5-methoxyflavone-7-O-β-D-glucopyranoside and 3’,4’,7-Trihydroxy-5-Methoxyflavone.更多还原