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茶鲜叶与成茶中总黄酮含量的比较分析 被引量:4

Compared analysis of the flavonoids content between fresh tea and tea products
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摘要 为探讨茶叶鲜叶与成茶中总黄酮含量的变化,首先对提取条件:乙醇浓度、提取温度、提取时间、pH值等进行研究,以确定最佳提取条件。在最佳提取条件下,对龙井43、龙井长叶、白毫早、乌牛早4个品种的鲜叶和成茶中总黄酮含量进行分析。结果表明:最佳提取条件为pH4,提取温度80~90℃,乙醇浓度60%,提取时间4h。4个品种中鲜叶黄酮类含量都显著高于成品茶。 In order to study the change of the flavonoids content between fresh tea and tea products, at first, extracting conditions as ethanol concentration, extracting temperature, extracting time, pH value ect are studied for the optimum extracting conditions. Then we research at Longjing 43, Longjingchangye, Baihaozao and Wuniuzao on the best method basis. As the results, the determination is better effect when pH4, temperature 80-90 ℃, ethanol 90% and extracting time 4 hours; the flavoniods content of fresh tea is much higher than tea products.
出处 《食品科技》 CAS 北大核心 2009年第9期184-186,共3页 Food Science and Technology
基金 河南省科技攻关项目(991020207)
关键词 茶叶 黄酮类 提取条件 含量 tea flavonoids extracting conditions content
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  • 1余美料,陈镇,黎海妮,黄锁义.莲藕总黄酮的提取及鉴别[J].右江民族医学院学报,2005,27(1):96-97. 被引量:11
  • 2廖亮.银杏叶总黄酮提取方法研究[J].食品科学,1994,15(8):33-35. 被引量:71
  • 3Ogawa W, Arai H, Tanizawa H, et al. Characterization of orange juice by flavanone glycoside [ J ]. J Agric Food Chem, 1994,(42): 2183 -2190.
  • 4Mcdonald M S, Hughes M,Bums J, et al. Survey of the free and conjugated myricetin and quercetin content of red wines of different geographical origins[J]. J Agric Food Chem, 1998, (9):368- 375.
  • 5Middleton J R. Biological properties of plant flavonoid: an overview[J], Int J Pharmacognos, 1996, (34):344-348.
  • 6Krause M, Galensa R. Improvement ehiral stationary phase based on cellulose tfiacetate supported on non - macroporous silica gel diol for the high - performance liquid chromatographic separation of racemic flavanones and diastereomeric flavanone glycosides [ J ]. J. Chromatogr, 1990, (502) :287 - 296.
  • 7Tamura H, Hayashi Y, Sugisawa H, et al. Structure determination of acylated anthocyanins in Muscat bailey a grapes by homonuclear hartmann- hahn spectroscopy and liquid chromatography - mass spectrometry[J ]. Phytochem Anal, 1994, (5): 190- 196.
  • 8Robard K, Antolovich M. Analytical chemistry of fruit bioflavonoids[J]. Analyst, 1997, (122): 11R-34R.
  • 9Garrett, S. D. Lee, H. A. Friar, P. M. K. et al. Validation of a novel estrogen receptor- based microti -tration plate assay for the determination of phytoe- strogens in soybased foods [J]. J Agric Food Chem, 1999, (47):4106 -4111.
  • 10Guyot S, Marnet N, Lrada D, et al. Revers -ed -phase HPLC fol - lowing thiolysis for quan - titative estimation and characterazation of the fourmain classes phenolic compounds in different tissue zones of a Franch cider apple variety(Malus Domestica var. Kermerfien) [J]. J Sci Food Agric,1998, (46): 1698 - 1705.

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