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    基于UPLC-Q-Exactive-Plus-Orbitrap-MS的酢浆草化学成分分析

    Chemical Constituents Analysis of Oxalis Corniculata L. Based on UPLC-Q-Exactive-Plus-Orbitrap-MS

      摘要
    • 摘要:
      目的  基于超高效液相色谱-四极杆-静电场轨道阱高分辨质谱联用(UPLC-Q-Exactive-Plus-Orbitrap-MS)技术分析酢浆草的化学成分。
      方法 液相采用Hypersil GOLD C18色谱柱(100 mm×2.1 mm，1.9 μm)，以0.1%甲酸-水溶液(A)-乙腈(B)为流动相梯度洗脱，流速0.3 mL·min–1，柱温40 ℃，进样量1 μL。质谱采用电喷雾离子源(ESI)，以正、负离子交换模式检测，扫描范围为m/z 100~1 500，扫描模式为Full MS/dd-MS2。通过Compound Discoverer 3.1软件分析质谱数据，参考mzCloud、PubChem、OTCML数据库，同时结合对照品的碎片离子信息和相关文献鉴定化合物结构。
      结果 从酢浆草中共鉴定了110个化合物，包括黄酮类45个、有机酸类41个、氨基酸类7个、香豆素类6个、生物碱类5个、醛类2个、其他类成分4个。
      结论 本研究首次采用UPLC-Q-Exactive-Plus-Orbitrap-MS技术对酢浆草的化学成分进行定性分析，为进一步研究其药效物质基础及质量控制方法提供参考依据。

       

      Abstract:
      OBJECTIVE  To analyze the chemical constituents in Oxalis corniculata L. by UPLC-Q-Exactive-Plus-Orbitrap-MS technology.
      METHODS  A Hypersil GOLD C18 column(100 mm×2.1 mm, 1.9 μm) was used for gradient elution using 0.1% formic acid solution(A)-acetonitrile(B) as mobile phase. The flow rate was 0.3 mL·min–1, column temperature was 40 ℃, and injection volume was 1 μL. The electrospray ionization(ESI) source was adopted, and the scanning mode was positive and negative ion exchange, with the scanning range of m/z 100–1 500 and scanning mode of full scan+ddMS2. Mass spectrometry data were analyzed using Compound Discoverer 3.1 software, and compound structures were identified by referencing mzCloud, PubChem, OTCML databases, as well as fragment ion information of reference standards and relevant literature.
      RESULTS  A total of 110 compounds were identified from Oxalis corniculata, including 45 flavonoids, 41 organic acids, 7 amino acids, 6 coumarins, 5 alkaloids, 2 aldehydes and 4 other constituents.
      CONCLUSION  In this study, the chemical constituents of Oxalis corniculata are qualitatively analyzed by UPLC-Q-Exactive-Plus-Orbitrap-MS technology for the first time, which can provide reference for further pharmacodynamic material basis and quality control study of the crude medicine.

       

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