草麻黄HPLC特征图谱研究
2018-12-06孙云波沈硕宋联强张创峰田清存崔旭盛毕丹
孙云波 沈硕 宋联强 张创峰 田清存 崔旭盛 毕丹
摘要:目的 建立草麻黄的HPLC特征图谱,为其质量标准的制定提供依据。方法 采用RP-HPLC,色谱柱为Waters XBridgeTM Phenyl(250 mm×4.6 mm,5 ?m),以甲醇-0.092%磷酸(含0.04%三乙胺和0.02%二正丁胺)为流动相,梯度洗脱,0~14 min流速为0.8 mL/min,21~60 min流速为1.0 mL/min,检测波长210 nm,柱温30 ℃,进样体积为10 ?L,记录时间为60 min。结果 HPLC特征图谱的方法学考察结果符合要求,共标定草麻黄HPLC特征图谱的9个特征峰,指认其中盐酸麻黄碱、盐酸伪麻黄碱和盐酸甲基麻黄碱3个特征峰,10批草麻黄特征图谱的相似度为0.861~0.982。结论 本研究建立的草麻黄HPLC特征图谱可为草麻黄质量标准的建立提供依据。
关键词:草麻黄;高效液相色谱法;特征图谱;盐酸麻黄碱;相似度分析;质量标准
DOI:10.3969/j.issn.1005-5304.2018.12.017
中图分类号:R284.1 文献标识码:A 文章编号:1005-5304(2018)12-0067-04
Abstract: Objective To establish an HPLC specific chromatograms of Ephedra sinica Stapf. and to provide a basis for establishment of quality standards of Ephedra sinica Stapf. Methods The RP-HPLC method were adopted, with Waters XBridgeTM phenyl (250 mm × 4.6 mm, 5 ?m) as the chromatographic column. Methanol and water containing 0.092% phosphoric acid, 0.04% triethylamine and 0.02% dibutylamine was as the mobile phase for gradient elution. Flow rate of 0–14 min was 0.8 mL/min; flow rate of 21–60 min was 1.0 mL/min. The detection wavelength was set at 210 nm. The column temperature was 30 ℃. The sample volume was 10 ?L. The recording time was 60 min. Results The methodological study of HPLC specific chromatograms met relevant requirements. A total of nine characteristic peaks of HPLC specific chromatograms of Ephedra sinica Stapf. were marked, and three characteristic peaks of ephedrine hydrochloride, pseudoephedrine hydrochloride and methylephedrine hydrochloride were identified. Similarities of 10 batches of Ephedra sinica Stapf. were among 0.861–0.982. Conclusion The HPLC specific chromatograms of Ephedra sinica Stapf. can provide a basis for establishment of quality standards of Ephedra sinica Stapf..
Keywords: Ephedra sinica Stapf.; HPLC; specific chromatograms; ephedrine hydrochloride; similarity analysis; quality standards
草麻黃Ephedra sinica Stapf.为麻黄科植物,是《中华人民共和国药典》收载的中药麻黄的基源植物之一,与中麻黄Ephedra intertmedia Schrenk et C.A. Mey.和木贼麻黄Ephedra equisetina Bge.均为法定正品药用麻黄[1]。麻黄性温,味辛、微苦,功效发汗解表、利水消肿、宣肺平喘,具有兴奋中枢神经系统、松弛支气管平滑肌、免疫抑制、抗氧化、抗凝血、抗病毒及抗癌、预防肥胖等作用[2-4]。2015年版《中华人民共和国药典》规定以盐酸麻黄碱和盐酸伪麻黄碱的总质量分数不得少于0.8%作为麻黄质量控制的标准[1]。但麻黄化学成分复杂,含有生物碱类、黄酮类、挥发油、有机酚酸类、糖类及鞣质、单萜糖苷类、木质素类等多种化学成分[3-8],药理作用丰富[7-11]。中药的药效作用是其所含多种成分共同作用的结果,因此仅对上述2种生物碱成分进行定量分析,不能从整体上反映麻黄药材的内在质量。……
