摘要:
采用气相色谱质谱联用(GC/MSD)的方法分析安溪铁观音、茉莉花花茶和武夷岩茶3种茶叶茶汤丙酮提取物的成分,分别鉴定出化合物10、13和12种.3种茶叶提取物中有6种共有成分,分别为:1,2,3-苯三酚、3,7-二氢-1,3,7-三甲基-1H-嘌呤-2,6-二酮、2-苯基乙醇、3-甲氧基-1,2-苯二酚、吲哚和橙花叔醇(武夷岩茶为反式橙花叔醇).不同茶叶丙酮提取物成分的种类、数量和含量存在明显差异.铁观音丙酮提取物中特有的物质有1,1-二乙氧基-丁烷、甲氧基-吡嗪、.alpha.,.beta.-Methyl-2-deoxy-D-ribopyranoside和2-乙基己基草酸戊酯.花茶丙酮提取物中特有的物质有(E)-4,4-二甲基-2-戊烯、2-丙烯基己酸酯、左旋葡聚糖、3,5-二甲氧基-4-羟基-苯甲醇和3-甲基-5-吡唑甲酸.武夷岩茶丙酮提取物中特有的物质有2,3-二甲基-2-戊烯、1,3-二甲苯、CIS-橙花叔醇、1,5-二甲基-6-氧-双环己烷和顺式-11,14,17-二十碳三烯酸甲酯.
Abstract:
Components in the acetone extracts of three varieties of tea were analyzed by using gas chromatography/mass spectrometry(GC/MSD).10,13 and 12 compounds were identified from Anxi Tieguanyin,Fujian Jasmine and Wuyi Rock,respectively.The compounds found commonly in the tea extracts were 1,2,3-benzenetriol,1H-purine-2,6-dione,3,7-dihydro-1,3,7-trimethyl-,phenylethyl alcohol,1,2-benzenediol,3-methoxy-,indole and nerolidol(cis-nerolidol in Wuyi Rock).They differed in quantity,type and content in the extracts.The unique substances in the Anxi Tieguanyin extract included butane,1,1-diethoxy-,pyrazine,methoxy-alpha-and beta-methyl-2-deoxy-D-ribopyranoside,oxalic acid and 2-ethylhexyl pentyl ester.The different constituents in the Fujian Jasmine extract were 2-pentene,4,4-dimethyl-,(E),hexanoic acid,2-propenyl ester,1,6-anhydro-beta-D-glucopyranose,3,5-dimethoxy-4-hydroxybenzyl alcohol,pyrazole-5-carboxylic acid and 3-methyl-.The unique compounds in the Wuyi Rock extract were 2-pentene,2,3-dimethyl-,benzene,1,3-dimethyl-,1,6,10-dodecatrien-3-ol,3,7,11-trimethyl-,[S-(Z)]-,1,5-dimethyl-6-oxa-bicyclo[3.1.0]hexane,11,14,17-eicosatrienoic acid and methyl ester.
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