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茶叶科学 ›› 2008, Vol. 28 ›› Issue (2): 89-92.doi: 10.13305/j.cnki.jts.2008.02.004

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离子对色谱法测定茶叶中的茶氨酸

龚雨顺1,2, 黄建安1, 崔湘兴3,*, 李勤1, 李银花1, 陈金华1   

  1. 1. 湖南农业大学茶学教育部重点实验室,湖南 长沙,4101282;
    2. 湖南农业大学药用植物资源系,湖南 长沙,410128;
    3. 湖南农业大学国际学院,湖南 长沙,410128
  • 收稿日期:2007-09-24 修回日期:2008-01-15 出版日期:2008-04-15 发布日期:2019-09-16
  • 通讯作者: *cuixiangxing@126.com
  • 作者简介:龚雨顺(1974— ),男,湖南双峰人,在职博士生,主要从事茶及植物功能成分化学。
  • 基金资助:
    2004BA542C 茶叶和辣椒功能成分高效提制技术研究与开发 科技部十五攻关项目

Determination of Theanine in Tea by Paired Ion Chromatography

GONG Yu-shun1,2, HUANG Jian-an1, CUI Xiang-xing3,*, LI Qing1, LI Yin-hua1, CHEN Jin-hua1   

  1. 1. Key Laboratory of Tea Science of Ministry of Education, Changsha 410128, China;
    2. Department of Medicinal Botanical Resource, Changsha 410128, China;
    3. Department of Medicinal Botanical Resource, Hunan Agricultural University, Changsha 410128, China
  • Received:2007-09-24 Revised:2008-01-15 Online:2008-04-15 Published:2019-09-16

摘要: 通过添加十二烷基磺酸钠(SDS)为离子对试剂,以乙腈-水(磷酸)为流动相,在200 nm的检测波长条件下,建立了一种快速测定茶叶中茶氨酸的分析方法。茶氨酸的保留时间为6.27 min;在0.04~20 μg范围内,茶氨酸峰面积与进样量之间有良好的线性关系,回归方程为:Y=1.51466×106X+3.28706×105(r2=0.99901);当S/N=3时,最低检测浓度为1.15 ng。所建方法快速,简便,准确,可用于茶叶中茶氨酸含量测定。

关键词: 茶氨酸, 离子对色谱, 茶叶

Abstract: A paired ion chromatographic method was developed for rapid determination of theanine in tea. SDS was added as a paired ion reagent, mobile phase was a mixture of acetonitrile and phosphoric acid aqueous solution, detection wavelength was set at 200 nm. The retention time of Theanine was 6.27 min. The calibration of theanine was in good linearity in the range of 0.04~20 μg with the regression equation Y=1.51466×106X+3.28706×105(r2=0.99901). The detection limits was 1.15 ng(S/N=3). This method is rapid, simple, and accurate for the analysis of theanine in tea.

Key words: theanine, paired Ion Chromatography, tea

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