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作 者:张丽丽[1,2] 白永亮[3] 宿树兰[1,2] 钱大玮[1,2] 尚尔鑫[1,2] 欧阳臻[3] 段金廒[1,2]
机构地区:[1]南京中医药大学江苏省中药资源产业化过程协同创新中心,南京210023 [2]南京中医药大学药学院,南京210023 [3]江苏大学药学院,镇江212013
出 处:《药物分析杂志》2014年第4期717-722,共6页Chinese Journal of Pharmaceutical Analysis
基 金:国家"十二五"科技支撑计划项目(2010BA I04B 03);江苏高校优势学科建设工程资助项目(ysxk-2010)
摘 要:目的:优化中国药典中桑叶含量测定项下的色谱条件。方法:采用LC—MS联用技术和标准加入法鉴定中国药典方法下“芦丁”峰的纯度;优化后的色谱条件:Diamonsil^TM C18(250mm×4.6mm,5μm),以乙腈(A)-0.2%甲酸水溶液(B)为流动相,梯度洗脱(0min,18%A;0-5min,18%A→20%A;5—7min,20%A→22%A;7~24min,22%A→23%A)。流速0.8mL·min^-1,检测波长358nm,柱温30℃,进样量10μL。结果:2010年版中国药典(一部)桑叶的含量测定项下“芦丁”峰实际是芦丁与异槲皮苷的混合峰;优化后的方法实现了芦丁和异槲皮苷的基线分离,其线性范围分别为0.222-8.88μs(r=0.9999)、0.143~5.72μg(r=0.9999);平均回收率(n=5)分别为100.8%(RSD=1.6%)、100.5%(RSD=1.4%)。结论:优化后的方法简便,重复性好,可以客观准确地用于桑叶药材的质量控制,为中国药典中桑叶质量标准的修订提供科学依据。Objective: To optimize the chromatographic conditions in the determination method of Moil Folium(mulberry leaf)in Chinese Pharmacopoeia. Methods: The purity of "rutin" was identified by combined use of the pharmaco- peia LC- MS method and adding standards. The analyses were performed on DiamonsilTMCls columns (250mm×4.6mm,5μm)with the gradient elution (0 min,18%A;0-5 min,18%A→20%A;5 -7 min,20%A→22%A;7 -24 min, 22%A→23% A)of acetonitrile (A) -0. 2% formic acid(B) aqueous at a flow rate of 0. 8 mL · min^-1. The detection wavelength was set at 358 nm and the column temperature was controlled at 30 ℃. The injection volume was 10 IxL. Results: The peak of rutin obtained from the pharmacopeial method was actually mixed with turin and isoquercitrin. Ru- tin and isoquercitrin were separated successfully using the optimized method, and good linearity was obtained for the two contents in the ranges of 0. 222 -8. 88 μg(r =0. 9999) and 0. 143 -5. 72 μg(r =0. 9999) ,respectively. The average recov- eries ( n = 5) of the two constitutions were 100. 8% ( RSD = 1.6% ) and 100. 5% ( RSD = 1.4% ) respectively. Conclusion: The optimized method,which is simple and reproducible,can be used for the quality control of Moil Folium. This study provides a scientific basis for the revise of the quality standards of Moil Folium in Chinese Pharmacopoeia.
关 键 词:桑叶 黄酮类化学成分 芦丁 异槲皮苷 含量测定方法 色谱条件优化 质量标准修订
分 类 号:R917[医药卫生—药物分析学]
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