期刊文献+

普洱茶的抗氧化酚类化学成分的研究 被引量:38

Study on Antioxidative Polyphenol Compounds in Pu’er Tea
下载PDF
导出
摘要 从云南省双江县勐库产的普洱茶中分离得到11个化合物,分别为:(-)-没食子儿茶索(GC,1),(-)-表儿茶素(EC,2),(+)-儿茶素(C,3),杨梅素(4),没食子酸(5),山奈酚(6),山奈酚-3-O-B-D-葡萄糖甙(7),山奈酚-3-O-P丁糖甙(8),槲皮素(9),槲皮素-3-O-B-D葡萄糖甙(10)以及2,5-二羟基苯甲酸(11)。其中,化合物6-11为首次从普洱茶中分离得到。DPPH自由基清除活性测试结果表明,化合物2、3、5的活性与阳性对照品抗坏血酸接近。化合物的结构与其活性的关系比较分析表明,简单儿茶素(2,3)和简单酚类化合物(5)的抗氧化活性较高,与阳性对照品抗坏血酸接近;黄酮类化合物(4,6,9)次之,黄酮类配糖体(7,8,10)及化合物11则较差。 Eleven phenolic compounds were isolated from the Pu'er tea, which was produced in the post-fermentated process by using the crude green tea prepared from the leaves of Camellia sinensis var. assamica as raw materials. Their structures were identified as gallocatechin(1), (-)-epicatechin(2), (+)-catechin(3), myricetin(4), gallic acid(5), kaempferol(6), kaempferol-3-O-B-D- glucopyranoside(7), kaempferol-3-O-rutinoside(8), quercetin(9), quercetin-3-O-B-D-glucopyranoside(10), 2,5-dihydroxy-benzoic acid(11). This is the first time that compounds 6-11 were found from Pu'er tea. All of isolated compounds were tested for their antioxidative activities by DPPH radical scavenging assay. It was found that compounds 2, 3 and 5 showed antioxidative activity close with that of positive control, L-ascorbic acid, and the flavonoids(5, 6 and 9) are more active than the flavonoid glycosides(7, 8 and 10)and compound 11.
出处 《茶叶科学》 CAS CSCD 北大核心 2006年第2期112-116,共5页 Journal of Tea Science
基金 国家自然科学基金(30370367)研究内容之一
关键词 普洱茶 酚性成分 抗氧化 化学成分 Camellia sinensis vat. assamica, Pu'er tea, phenolic compounds, antioxidative acticity
  • 相关文献

参考文献6

二级参考文献16

  • 1张雯洁,刘玉清,李兴从,杨崇仁.云南“生态茶”的化学成分[J].云南植物研究,1995,17(2):204-208. 被引量:53
  • 2Xu Y M,Chem Pharm Bull,1991年,39卷,639页 被引量:1
  • 3Pouchert CJ. Aldrich Library of NMR spectra, 2nd Edition.Japan: Aldrich Chemical Co, 1983 被引量:1
  • 4Foo LY,Lu Y,Mcnabb WC, et al. Proanthocyanidins from Lolus pectunculatus . Phytochemistry , 1997,43(8): 1689-1696 被引量:1
  • 5Yoshiki K, Hiroyuki I, Keiko Y, et al. Tannins and related compounds XCIII. Occurrence of enantiomeric proanthocyanidins in the leguminsae plants Cassia Fistula L. and C. javanica L. Chem Pharm Bull, 1990,38(4) :888. 被引量:1
  • 6Fumio H, Genichiro N, Itsuo N. Tannins and related compounds LXVII.Novel chalcan-flavan dimers, assamicains A,B and C,and a new flavan-3-ol and proanthacyanidins from the fresh leaves of Camellia sinensis L. var. assamica Kitamura. Chem Pharm Bull, 1989,37( 1 ) :77. 被引量:1
  • 7Lee M, Morimoto S, Nonaka G, et al. Flavan-3-olgallates and proanthocyanidins from Pithecellobium lobatum. Phytochemistry, 1992,31:2117-2120. 被引量:1
  • 8David JM, Yoshida M, Gottlieb OR. Phenylpropanoid-catechins from bark of Ocotea porosa. Phytochemistry, 1994, 35: 545-546. 被引量:1
  • 9Fumiko A, Tatsuo Y. Lignan glycosides from Parsonsia laevigata . Ph ytochemistry , 1989,28(6):1737-1741. 被引量:1
  • 10Nahrstedt A, Proksch P, Conn EE, et al. (-)-Catechin, flavonol glycosides and flavones from Chamaebatia foliolosa. Phytochemistry, 1987,26:1546-1547. 被引量:1

共引文献141

同被引文献668

引证文献38

二级引证文献421

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部