基于RRLC-Q-TOF-MS/MS技术快速分析芪葛颗粒的化学成分

Rapid analysis on chemical constituents in Qige Keli by RRLC-Q-TOF-MS/MS

建立芪葛颗粒中化学成分的超高液相色谱-四极杆飞行时间质谱(RRLC-Q-TOF-MS/MS)定性分析方法,采用Kramosil C18 色谱柱(4.6 mm×150 mm,3.5μm),以0.2%甲酸水溶液和乙腈为流动相,梯度洗脱,体积流速为1 mL·min-1,柱温30℃,进样量10μL;电喷雾(ESI)离子源,以四极杆飞行时间质谱为检测器进行检测。结合药材、对照品、文献报道及质谱数据,对芪葛颗粒中的化学成分进行了归属和结构鉴定,共鉴定出44个化合物,其中3个黄酮类,21个黄酮苷类,8个有机酸类,6个内酯类以及3个皂苷类化合物。该结果为芪葛颗粒的质量控制以及进一步的药效物质基础深入研究奠定基础。

The qualitative analysis method of RRLC-Q-TOF-MS/MS was established for determine the chemical constituents in Qige Keli. Kramosil C18 column(4.6 mm×150 mm, 3.5 μm) was used at the temperature of 30 ℃. The mobile phase was 0.2% formic acid and acetonitrile by gradient elution, with a flow rate at 1.0 mL·min-1, and the injection volume was 10 μL. The high-resolution quadrupole time-flight mass spectrometry was used as detector with electrospray ion source in both positive and negative models. On the basis of medicinal materials, reference materials, literature reports, and mass spectrometry data, the chemical composition in the Qige Keli was identified. A total of 44 compounds were identified, including 3 flavonoids, 21 flavonoid glycosides, 8 organic acids, 6 lactones, and 3 saponins. The results laid the foundation for the quality control of Qige Keli and the further research on pharmacodynamic materials.