食品科学

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HPLC与LC-MS/MS测定蛹虫草发酵液中虫草素的方法比较

简利茹,杜双田   

  1. 1.西北农林科技大学生命科学学院,陕西 杨凌 712100;
    2.旱区作物逆境生物学国家重点实验室(西北农林科技大学),陕西 杨凌 712100
  • 出版日期:2013-07-25 发布日期:2013-08-02

Determination of Cordycepin in Fermentation Supernatant of Cordyceps militaris by HPLC and LC-MS/MS: A Comparison of Two Methods

JIAN Li-ru,DU Shuang-tian   

  1. 1. College of Life Sciences, Northwest A & F University, Yangling 712100, China;
    2. State Key Laboratory of Crop Stress Biology in Arid Areas (Northwest A & F University), Yangling 712100, China
  • Online:2013-07-25 Published:2013-08-02

摘要:

目的:通过高效液相色谱(HPLC)与液质联用(LC-MS/MS)测定蛹虫草发酵液中虫草素的方法比对,评价2种方法的可行性。方法:蛹虫草发酵液经大孔树脂分离纯化后,分别采用紫外检测器和质谱检测器对10种不同发酵液进行测定。结果:HPLC法测定发酵液中虫草素的检出限(LOD)和定量限(LOQ)分别为13.6μg/L和53.6μg/L,LCMS/MS法测得虫草素的LOD和LOQ分别为2.1μg/L和7.8μg/L,2种方法虫草素的保留时间分别为22.7min和7.8min,平均回收率分别为94.68%和93.91%。结论:两种方法灵敏度高、选择性好、操作简便,均可对蛹虫草发酵液中虫草素进行准确的定性定量分析。

关键词: 高效液相色谱, 液质联用, 蛹虫草发酵液, 虫草素

Abstract:

Objective: To comparatively evaluate the feasibility of HPLC and LC-MS/MS for measuring cordycepin in
fermentation supernatant of Cordyceps militaris. Methods: The fermentation supernatants of 10 Cordyceps militaris strains were
purified by macroporous resin column chromatography. The purified samples obtained were analyzed separately by HPLC with
UV detection and LC-MS/MS. Results: The limit of detection (LOD) and limit of quantitation (LOQ) of HPLC were 13.6 μg/L and
53.6 μg/L, respectively, whereas those of LC-MS/MS were 2.1 μg/L and 7.8 μg/L, respectively. The retention time of cordycepin in HPLC
and LC-MS/MS was 22.7 min and 7.8 min, respectively, and the average recovery was 94.68% and 93.91%, respectively. Conclusion:
Both methods have high sensitivity, selectivity and simple operation, and can be used for qualitative and quantitative analysis.

Key words: HPLC, LC-MS/MS, cordyceps militaris fermentation supernatant, cordycepin