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茶叶科学 ›› 2011, Vol. 31 ›› Issue (3): 211-217.doi: 10.13305/j.cnki.jts.2011.03.008

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邻苯二甲醛柱前衍生反相高效液相色谱法测定茶叶中17种游离氨基酸

杨卫, 鲜殊, 李大祥*, 宛晓春*   

  1. 安徽农业大学农业部茶及药用植物安全生产重点开放实验室,安徽 合肥 230036
  • 收稿日期:2010-12-13 修回日期:2011-02-28 出版日期:2011-06-15 发布日期:2019-09-06
  • 作者简介:杨卫(1984— ),男,安徽淮南人,硕士研究生,主要从事茶叶生物化学与综合利用的研究。
  • 基金资助:
    现代农业(茶叶)产业技术体系建设专项资金(农科教发[2008]10号)、国家标准化工作项目资助内容

RP-HPLC Determination of Seventeen Free Amino Acids in Tea with O-phthalaldehyde Precolumn Derivation

YANG Wei, XIAN Shu, LI Da-xiang*, WAN Xiao-chun*   

  1. Key Laboratory of Tea & Medicinal Plant and Product Safety of Ministry of Agriculture, Anhui Agricultural University, Hefei 230036, China
  • Received:2010-12-13 Revised:2011-02-28 Online:2011-06-15 Published:2019-09-06

摘要: 采用邻苯二甲醛作为柱前衍生化试剂,结合反相高效液相色谱,优化了色谱条件,实现对茶汤中17种一级氨基酸的精确定性和定量分析。17种氨基酸的保留时间和峰面积的RSD分别在0.02%~0.70%与0.11%~1.15%之间,经方法学考察,该方法具有良好的稳定性和重现性。

关键词: HPLC, 柱前衍生化, 邻苯二甲醛(OPA), 游离氨基酸, 茶叶

Abstract: In this paper, a reversed-phase high performance liquid chromatography combined with precolumn derivatization with O-phthalaldehyde and ?uorescence detection was set up for the qualitatively and quantitatively analysis of seventeen kinds of free amino acids in tea. The RSD of the retention time and peak area of the 17 kinds of free amino acids were 0.02%~0.70% and 0.11%~1.15%, respectively. With validation, this method was proved to be accurate, stable and reproducible for the analysis of free amino acids in tea.

Key words: HPLC, pre-column derivation, O-phthaldialdehyde (OPA), free amino acid, tea

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