天然产物研究与开发 ›› 2020, Vol. 32 ›› Issue (增刊2): 73-78.

• 研究简报 • 上一篇    下一篇

柱前衍生RP-HPLC法测定青稞和蛹虫草中16种氨基酸含量

于瑞涛1,张玉佩1,2,吴楠1,2,王秀1,2,吴小可1,2,梅丽娟1,杨小兵3,陶燕铎1*


  

  1. 1中国科学院藏药研究重点实验室 青海省藏药研究重点实验室 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东莞金美济药业有限公司,东莞 523000

  • 出版日期:2020-12-09 发布日期:2020-12-09
  • 基金资助:
    青海省科技项目(2017-HZ-811);西宁市科技项目(2018-Y-23);青海省藏药研究重点实验室创新平台发展建设专项(2017-ZJ-Y11)

Determination of 16 amino acids in Hordeum vulgare L. var. nudum Hook.f and Cordyceps militaris by RP-HPLC with pre-column derivatization

YU Rui-tao1,ZHANG Yu-pei1,2,WU Nan1,2,WANG Xiu1,2,WU Xiao-ke1,2,MEI Li-juan1,YANG Xiao-bing3,TAO Yan-duo1*#br#

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  1. 1Key Laboratory of Tibetan Medicine Research,Qinghai Provincial Key Laboratory of Tibetan Medicine Research,Northwest of Plateau Biology,Chinese Academy of Sciences,Xining 810001,China; 2 University of Chinese Academy of Sciences,Beijing 100049,China;3 Dongguan Jinmeiji Pharmaceutical Co.,Ltd.,Dongguan 523000,China

  • Online:2020-12-09 Published:2020-12-09

摘要:

为建立青稞和蛹虫草中16种氨基酸的分析方法,采用柱前衍生RP-HPLC法,以2,4-二硝基氟苯为衍生试剂,色谱柱为Phenomenex Gemini-NX C18,流动相A:0.05 mol/L的乙酸钠溶液(pH =6.4,含有1‰ NN-二甲基甲酰胺),流动相B:乙腈-水溶液(1∶1,V/V),梯度洗脱,检测波长360 nm,流速1 mL/min。结果表明,青稞中谷氨酸含量最高为2.58%,其次为脯氨酸1.08%;甲硫氨酸和半胱氨酸含量较少,含量小于0.05%,16种氨基酸总量均值为8.68%。蛹虫草中氨基酸含量高于青稞中的氨基含量,其谷氨酸含量最高为3.23%,其次为天门冬氨酸2.42%和丝氨酸1.60%;甲硫氨酸和半胱氨酸含量较少,含量小于0.05%,16种氨基酸总量为17.65%。该方法简便,稳定,可靠,可为青稞和蛹虫草的质量控制提供参考。

关键词: 青稞, 蛹虫草, 高效液相色谱法, 柱前衍生, 氨基酸

Abstract:

In order to establish a method to determine 16 amino acids in Hordeum vulgare L. var. nudum Hook.f and Cordyceps militaris,pre-column derivatization RP-HPLC was used with 2,4-dinitrofluorobenzene as derivative reagent,Phenomenex Gemini-NX C18 as chromatographic column,mobile phase is A:0.05 mol/L sodium acetate solution (pH = 6.4,containing 1 ‰ N,N-dimethylformamide) and B:acetonitrile-water.Solution(1∶1,V/V),gradient elution,wavelength 360 nm,flow rate 1 mL/min.The results showed that the content of glutamic acid in H. vulgare L. var. nudum was 2.58%,proline 1.08%,methionine and cysteine less than 0.05%,and the average value of 16 amino acids was 8.68%.The amino acid content of C. militaris is higher than H. vulgare L. var. nudum,which the content of glutamic acid was 3.23%,aspartic acid 242% and serine 1.60%,methionine and cysteine less than 0.05%,the total amount of 16 amino acids was 17.65%.The method is simple,stable and reliable,which can provide reference for the quality control of H. vulgare L.var. nudum and C. militaris.

Key words: Hordeum vulgare L. var. nudum Hook.f;Cordyceps militaris, HPLC;pre-column derivatization;amino acids

中图分类号:  R932