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。
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-O-β-D-glucopyranoside,3 ,4 ,7-Trihydroxy-5-methoxyflavone-7-O-β-D-glucopyranoside and 3 ,4 ,7-Trihydroxy-5-Methoxyflavone.
出处
《茶叶科学》
CAS
CSCD
北大核心
2010年第6期423-428,共6页
Journal of Tea Science
基金
国家自然科学基金(31000317)
中央级公益性科研院所基本科研业务费专项(0032007017)
云南省创新办科技计划课题(2007YNCXB-01-01)
关键词
普洱茶
E8组分
化学成分
Pu-erh tea
E8 fraction
chemical component
