天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (7): 1056-1061.

• 研究简报 • 上一篇    下一篇

DNFB柱前衍生化RP-HPLC测定大黄种子氨基酸的含量

刘何春1,2,徐文华1,沈建伟1,宋文珠1,臧黎黎3,周国英1*   

  1. 1 中国科学院西北高原生物研究所,西宁 810008; 2 中国科学院大学,北京 100049;3 电子科技大学,成都 610041
  • 出版日期:2014-07-31 发布日期:2014-11-09

Determination of Amino Acids in Rhubarb Seeds with DNFB Pre-column Derivatization by Reversed-phase High Performance Liquid Chromatography

LIU He-chun1,2, XU Wen-hua1, SHEN Jian-wei1, SONG Wen-zhu1, ZANG Li-li3, ZHOU Guo-ying1*   

  1. 1 Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810008 ,China; 2 University of Chinese Academy  of Sciences, Beijing 100049 ,China;  3 University of Electronic Science and Technology of China,Chengdu 610041, China
  • Online:2014-07-31 Published:2014-11-09

摘要: 采用柱前衍生RP-HPLC法测定大黄种子中氨基酸的含量。6 mol/L盐酸水解得到氨基酸,以2,4-二硝基氟苯(DNFB)为柱前衍生化试剂,梯度洗脱。色谱柱为Gemimi-NX C18(4.6 mm × 250 mm,5 μm);流动相A相为0.1 M乙酸钠水溶液,B相为乙腈-水(1:1),柱温37 ℃,检测波长360 nm。结果表明, 三种正品大黄种子中均含有17种氨基酸,总量在11.30%~19.26%。该方法灵敏、准确,有良好的重复性和稳定性。

关键词: 大黄种子, RP-HPLC, 2, 4-二硝基氟苯, 氨基酸

Abstract: The aim of the study was to determine the contents of amino acids in rhubarb seeds with pre-column derivatization by reversed-phase high-performance liquid chromatography (RP-HPLC). Amino acids extracted by the method of hydrolysis in 6 mol/L HCl were derivatized by 2,4-dinitrofluorobenzene (DNFB) and analyzed by RP-HPLC with gradient elution.The chromatographic separation was performed on a Gemimi-NX C18 (4.6 mm × 250 mm,5 μm) column with 0.1 M aqueous sodium acetate solution (A) and acetonitrile-water (1:1) (B) as mobile phases.The column temperature was maintained at 37 °C,and the detection wavelength was set at 360 nm.The results showed that the three genuine rhubarb seed contained 17 kinds of amino acids,11.30% to 19.26% of the total content.The experimental results proved that the developed RP-HPLC method was sensitive,accurate and repeatable.

Key words: Rhubarb seeds, reversed-phase high performance liquid chromatography, 2,4-dinitrofluorobenzene, amino acids

中图分类号: 

Q517