基于超高效液相色谱-串联质谱技术的白花檵木不同部位10个活性成分的含量比较分析

Determination and comparison of 10 active components in different parts of Loropetalum chinensis based on ultra-high performance liquid chromatography-tandem mass spectrometry

建立超高效液相色谱-串联质谱技术同时测定白花檵木Loropetalum chinensis不同部位叶、花、果实和根中鞣花酸、槲皮素、没食子酸、山柰酚、杨梅素、椴树苷、红景天苷、异槲皮苷、绿原酸、奎宁酸含量的方法学考察,为更合理地开发利用白花檵木资源提供参考依据。色谱柱为ACQUITY UPLC HSS T3柱(2.1 mm×100 mm, 1.8μm);流动相为乙腈-0.2%甲酸水,梯度洗脱;柱温30℃;流速0.3 mL·min^(-1);进样体积2μL。在电喷雾离子源负离子电离模式下采用多反应离子监测模式(MRM)。结果表明,10个活性成分线性关系良好,所建立的方法稳定,操作简单,结果可靠。10个活性成分存在于白花檵木不同部位中且含量差异明显,白花檵木不同部位中主要成分是多酚类成分,含量最高,其次是黄酮类成分。花中10个活性成分含量普遍较高,其中奎宁酸是含量最高的化学成分,质量分数达到22.539 1 mg·g^(-1)。该研究阐明了白花檵木同一部位不同活性成分差异及不同部位的活性成分含量差异,为进一步研究白花檵木药效物质奠定基础,同时可为白花檵木资源的综合开发利用提供参考。

To establish a method for the simultaneous determination of ellagic acid, quercetin, gallic acid, kaempferol, myricetin, tiliroside, salidroside, isoquercetin, chlorogenic acid, and quinic acid in the leaves, flowers, fruits, and roots of Loropetalum chinensis by ultra-performance liquid chromatography-tandem mass spectrometry, and provide references for the development and utilization of L. chinensis resources. The analysis was performed on the chromatographic column ACQUITY UPLC HSS T3(2.1 mm×100 mm, 1.8 μm) with a gradient mobile phase of acetonitrile-0.2% formic solution at the flow rate of 0.3 mL·min^(-1). Column temperature was 30 ℃ and injection volume was 2 μL. Multiple reactive ion monitoring mode(MRM) was used in the negative ion ionization mode of electrospray ion source. The 10 active components had a good linear relationship, and the established method was stable, simple, and accurate. The 10 active components existed in different parts of L. chinensis, with significant different content. The main components in different parts of L. chinensis were polyphenols, with the highest content, followed by flavonoids. The content of 10 active components was generally high in flowers. Among them, the content of quinic acid was the highest, reaching 22.539 1 mg·g^(-1). This study elucidates the differences of active components in the same part and the different parts of L. chinensis, thereby providing basis for the research on the pharmacodynamic substances of L. chinensis and references for the comprehensive development and utilization of L. chinensis resources.