[关键词]
[摘要]
目的 建立金沙藤药材的HPLC特征图谱方法,并评价药材不同部位的成分差异。方法 色谱柱为Waters symmetry C18(250 mm×4.6 mm,5μm);流动相为乙腈-0.2%磷酸水溶液;体积流量为1.0 mL/min;检测波长354 nm;柱温30℃;进样量20 μL。收集广西不同产地12批金沙藤药材进行分析,建立药材的特征图谱,并对其茎和叶中芦丁、异槲皮苷和紫云英苷含量进行了测定,进而评价药材的茎和叶化学成分差异。结果 从金沙藤药材特征图谱中分析得出7个共有峰,其中1号峰为咖啡酸,2号峰为芦丁,3号峰为异槲皮苷,5号峰为紫云英苷。经分析,其中11批药材的相似度在0.900 以上,1批药材的相似度在0.900以下;金沙藤茎比叶的化学成分丰富,且测定的3种成分含量高。结论 该方法简便、准确、重复性好,可为有效控制金沙藤药材的质量提供科学依据,药材采收季节以秋冬为佳。
[Key word]
[Abstract]
Objective To establish the HPLC characteristic spectrum of Lygodii Herba from different habitats in Guangxi Province, and to evaluate the difference of components in different parts of medicinal materials. Methods HPLC was performed on Waters symmetry C18 (250 mm×4.6 mm, 5 μm) column, with the mobile phase of acetonitrile-0.2% phosphoric acid at flow rate of 1.0 mL/min; Detection wavelength was 354 nm; The column temperature was 30℃ and the sample size was 20 μL. Twelve batches of Lygodii Herba samples were determined and the characteristic spectrum of those were established, and the content of rutin, isoquercetin, and astragalin were determined to evaluate the difference of chemical components in different parts of medicinal materials. Results There were seven characteristic peaks identified in the characteristic spectra of LygodiiHerba samples. peak 1 was caffeic acid, peak 2 was Rutin, peak 3 was Isoquercitrin and peak 5 was astragalin. The similarities of 11 batches of samples were proved to be higher than 0.900 and one batch of them was proved to be less than 0.900. The chemical component of stem was richer than that of leaves of Lygodii Herba, and the content of the component was higher in the stem than that of the leaves. Conclusion The method is simple, accurate, and reproducible, which can provide the scientific evidence for controlling the internal quality standards effectively. The preferred harvest season of Lygodii Herba is autumn and winter.
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[基金项目]
广西医药产业人才小高地资助项目(201703);广西科技重大专项(桂科AA17202045)