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UPLC-MS/MS法测定炮制前后款冬花中款冬碱的含量

2021-12-08昝珂李耀磊王丹丹金红宇马双成刘丽娜王莹

中国民族民间医药·下半月 2021年10期

昝珂 李耀磊 王丹丹 金红宇 马双成 刘丽娜 王莹

【摘 要】 目的:建立UPLC-MS/MS法测定炮制前后款冬花中款冬碱的含量。方法:采用沃特世CORTECS UPLC C18(100 mm × 2.1 mm, 1.6 μm)色谱柱,流动相为0.05%甲酸水溶液(A)及含0.05%甲酸的乙腈(B)(4∶[KG-*3/5]1);电喷雾离子源,正离子多反应模式监测,外标法测定。结果:款冬碱在1.005~100.5 ng·mL-1浓度范围内与峰面积呈现良好的线性关系(r>0.9990);平均加样回收率分别为92.28%,RSD分别为2.83%;炮制后款冬碱含量下降。结论:该方法经验证可用于款冬花中款冬碱的含量测定。

【关键词】 款冬花;超高效液相色谱-串联质谱;款冬碱;含量测定

【中图分类号】R284   【文献标志码】 A【文章编号】1007-8517(2021)20-0028-04

Determination of Tussilagine in Crude and Prepared Farfarae Flos by UPLC-MS/MS

ZAN Ke1 LI Yaolei2 WANG Dandan1 JIN Hongyu1 MA Shuangcheng1 LIU Lina1* WANG Ying1*

1.National Institutes for Food and Drug Control, Beijing 100050, China;

2. School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

Abstract:Objective To establish an UPLC-MS/MS method for quantitative analysis of tussilagine in crude and prepared Farfarae Flos. Methods The assay was performed on an Waters CORTECS UPLC C18(100 mm×2.1 mm, 1.6 μm) column and the sample was eluted with a mobile phase consisted of 0.05% formic acid in water (A)-0.05% formic acid in acetonitrile (B) (4:1). The MS system was operated by using electrospray ionization (ESI) in the positive ion mode, and the scan mode was in multiple reaction monitoring (MRM) mode. External standard method was used in the experiment. Results  The linear range of tussilagine was 1.005-100.5 ng·mL-1 (r>0.9990). The average recovery was 92.28% with RSD of 2.83%. After processing, the content of tussilagine decreases in Farfarae Flos. Conclusion The proposed method can be used as content determination of tussilagine in Farfarae Flos.

Key words:Farfarae Flos; Ultra-high Performance Liquid Chromatography-tandem Mass Spectrometry; Tussilagine; Content Determination

款冬花为菊科植物款冬(Tussilago farfara L.)的干燥花蕾,别名冬花,主要分布于甘肃、陕西、山西及河南等地区[1]。现代臨床多用于新久咳嗽,喘咳痰多,劳嗽咳血的治疗,疗效显著。临床多用蜜炙品(蜜款冬花),中医认为,蜂蜜炮制款冬花能够增强止咳化痰、润肺下气的功效[2]。款冬花中含有吡咯里西啶生物碱类成分,款冬碱是从款冬花中分离得到的一种吡咯里西啶生物碱类成分[3]。1,2-不饱和的吡咯里西啶生物碱具有肝毒性,但款冬碱是饱和的吡咯里西啶生物碱(结构式见图1),不具有肝毒性[4]。吡咯里西啶生物碱类成分往往具有抗菌、抗胆碱等药理作用[5]。款冬碱至今仅在少数几个植物中有报道[6],具有较强的专属性,含量测定至今未见报道。本文建立UPLC-MS/MS法,同时测定蜜炙前后的款冬花中款冬碱的含量,对其炮制前后含量的变化进行比较。

1 仪器与材料

H-CLASS超高效液相色谱仪(沃特世);三重四极杆串联质谱检测器(沃特世);R-210型旋转蒸发仪(Buchi公司);KQ-3200DV型超声波清洗器(昆山市超声仪器有限公司),Quintix125D-1CN电子分析天平(赛多利斯公司)。Oa……

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