HPLC法同时测定麻黄-桂枝药对水煎液中5种成分的含量
2021-07-01王迎春王梦曹文利田宇柔康立英李军山牛丽颖
王迎春 王梦 曹文利 田宇柔 康立英 李军山 牛丽颖



摘要:为了进一步完善麻黄-桂枝药对的质量评价方法,利用HPLC法,分别在2种波长条件下,同时测定麻黄-桂枝水煎液中盐酸麻黄碱、盐酸伪麻黄碱、香豆素、肉桂酸、桂皮醛5种成分的含量。采用Diamonsil C18(4.6 mm×250 mm,5 μm)色谱柱,以乙腈-0.1%磷酸溶液为流动相,梯度洗脱,流速为1.0 mL/min,柱温为35 ℃,波长分别为210,280 nm。结果表明,盐酸麻黄碱、盐酸伪麻黄碱、香豆素、肉桂酸和桂皮醛的进样量分别为0.292 6~2.926 0,0.205 6~2.056 0,0.016 2~0.162 0 ,0.021 8~0.218 0,0.052 6~0.526 0 μg时,均呈现出良好的线性关系(r≥0.999 1);平均加样回收率为96.24%~104.03%(RSD<3%,n=9)。建立的检测方法准确、可靠,可为麻黄-桂枝药对的质量控制及配伍研究提供参考。
关键词:中药化学;高效液相色谱;波长切换;含量测定;麻黄;桂枝;药对
中图分类号:R284.1文献标识码:ADOI: 10.7535/hbgykj.2021yx03005
Abstract:In order to further improve the quality evaluation method of Ephedra-Cinnamomi Ramulus drug pair, the contents of ephedrine hydrochloride, pseudoephedrine hydrochloride, coumarin, cinnamic acid and cinnamaldehyde in the decoction of Ephedra-Cinnamomi Ramulus were determined by HPLC at two wavelengths. The analysis was carried out on a Diamonsil C18 (4.6 mm×250 mm,5 μm) by gradient elution with acetonitrile-0.1% phosphoric acid aqueous solution at a flow rate of 1.0 mL/min. The column temperature was controlled at 35 ℃.The detection wavelength was 210 nm and 280 nm respectively. The results show that it has a good linearity in the ranges of 0.292 6~2.926 0, 0.205 6~2.056 0, 0.016 2~0.162 0, 0.021 8~0.218 0 and 0.052 6~0.526 0 μg for ephedrine hydrochloride, pseudoephedrine hydrochloride, coumarin, cinnamic acid and cinnamaldehyde, respectively (r≥0.999 1). The average recovery rates are 96.24%~104.03% (RSD<3%, n=9). The established detection method is accurate and reliable, which can provide reference for the quality control and compatibility research of Ephedra-Cinnamomi Ramulus drug pair.
Keywords:chemistry of Chinese material medical; HPLC; wavelength switching; content determination; Ephedra; Cinnamomi Ramulus; drug pair
麻黃-桂枝药对出自《伤寒论》麻黄汤,为辛温解表的常用组合[1]。麻黄味辛、微苦,性温,具有发汗散寒,宣肺平喘,利水消肿之功效;桂枝味辛、甘,性温,具有发汗解肌,温通经脉,助阳化气,平冲降气之功效[2]。麻黄善行肌表卫分,乃发汗之要药,桂枝透营达卫,助麻黄解表散邪,麻黄、桂枝相须为用[3-5]。麻黄的化学成分主要包括生物碱类、挥发油类等[6],桂枝主要含有挥发油类、有机酸类等[7-8]。查阅文献,对麻黄-桂枝药对的研究多集中在药理活性等方面[9-12],对其化学成分研究较少。徐文杰等[13]研究不同配伍配比对麻黄-桂枝药对有效成分含量的影响,分别采用GC-MS测定水煎液中麻黄类生物碱含量,采用HPLC测定水煎液中香豆素、桂皮醇、桂皮醛的含量。李晓如等[14]利用气相色谱-质谱对麻黄-桂枝的挥发油成分进行测定。目前未见HPLC法同时测定麻黄-桂枝水煎液中麻黄类生物碱和肉桂酸、桂皮醛等主要成分的报道。……
