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HPLC法同时测定薄荷配方颗粒中6种成分的含量

2021-07-01田伟李葆林张闯甄亚钦王鑫国牛丽颖

河北工业科技 2021年3期

田伟 李葆林 张闯 甄亚钦 王鑫国 牛丽颖

摘要:为了提高薄荷配方颗粒的质量标准,建立其多指标定量评价体系,采用HPLC法同时测定薄荷配方颗粒中咖啡酸、橙皮苷、迷迭香酸、香叶木苷、香蜂草苷和蒙花苷6种成分的含量。采用Poroshell 120 EC-C18(4.6 mm×250 mm,5 μm)色谱柱,以甲醇(A)-乙腈(B)-5%冰乙酸(C)为流动相,梯度洗脱,流速为0.6 mL/min,柱温为35 ℃,咖啡酸、迷迭香酸、蒙花苷的检测波长为330 nm,橙皮苷、香蜂草苷的检测波长为284 nm,香叶木苷的检测波长为380 nm。结果表明,薄荷配方颗粒中6种待测成分的线性关系、分离度、重复性均符合要求,各成分的平均回收率分别为99.19%,98.06%,100.45%,98.90%,100.17%,99.78%。不同廠家的薄荷配方颗粒中6种化学成分的含量存在一定差异。建立的HPLC分析方法简便、快速、准确,可以为薄荷配方颗粒的质量控制提供方法参考。

关键词:中药化学;薄荷;配方颗粒;高效液相色谱法;含量测定

中图分类号:R284.1文献标识码:ADOI: 10.7535/hbgykj.2021yx03004

Abstract:In order to improve the quality standard of Herba Menthae formula granules and establish a quantitative evaluation system of multiple indexes, the contents of caffeic acid, hesperidin, rosmarinic acid, diosmin, didymin and buddleoside in Herba Menthae formula granules were determined by using the method of HPLC. The analysis was carried out on Poroshell 120 EC-C18 column (4.6 mm×250 mm, 5 μm) by gradient elution with methanol (A)-acetonitrile (B)-5% acetic acid (C) as the mobile phase at the flow rate of 0.6 mL/min. The column temperature was set at 35 ℃. The detective wavelength were 330 nm for caffeic acid, rosmarinic acid and buddleoside, 284 nm for hesperidin and didymin, 380 nm for diosmin, respectively. The results show that the linear relationship, separation and repeatability of the six constituents in Herba Menthae formula granules all meet the requirements. The average recovery rates of the constituents are 99.19%, 98.06%, 100.45%, 98.90%, 100.17% and 99.78%, respectively. There are certain differences in the six chemical constituents in Herba Menthae formula granules from different manufacturers. The method of HPLC is simple, accurate and reproducible, which can provide a method reference for the quality control of Herba Menthae formula granules.

Keywords:chemistry of Chinese material medical; Herba Menthae; formula granules; HPLC; content determination

薄荷为唇形科植物薄荷Mentha haplocalyx Briq.的干燥地上部分,其性凉,味辛,归肺、肝经,具有疏散风热,清利头目等功效[1]。现代研究表明,薄荷所含化学成分复杂,主要有挥发油类、黄酮类、有机酸、氨基酸等化学成分[2],具有抗炎、抗氧化、抗肿瘤、抗病毒和抗生育等多种药理作用[3]。目前有关薄荷的研究主要集中于其挥发油部分,薄荷传统用药方式主要为水煎,因此挥发油并非其唯一药效成分,但是关于薄荷非挥发性化学成分以及质量控制的研究相对较少。徐晶晶等[4]建立了薄荷药材特征图谱,并釆用DPPH法、FRAP法分别测定其抗氧化活性,通过谱效关系研究表明薄荷中对抗氧化作用贡献较大的化合物成分主要为黄酮类和酚酸类。……

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