HPLC-ELSD法同时测定鲜地黄中3种低聚糖的含量

伊伟贞 李先恩 秦民坚 徐怡 刘燕

中国药学杂志 ›› 2011, Vol. 46 ›› Issue (13) : 1038-1040.

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中国药学杂志 ›› 2011, Vol. 46 ›› Issue (13) : 1038-1040.
论著

HPLC-ELSD法同时测定鲜地黄中3种低聚糖的含量

  • 伊伟贞1,2,李先恩2*,秦民坚1*,徐怡3 ,刘燕2
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Simultaneous Determination of Three Oligosaccharides by HPLC - ELSD in the Fresh Root of Rehmannia glutinosa

  • YI Wei-zhen1,2,LI Xian-en2*,QIN Min-jian1*,XU Yi3,LIU Yan2
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摘要

目的 建立同时测定中药鲜地黄中主要的3种低聚糖的HPLC - ELSD含量测定方法方法 采用HPLC - ELSD对鲜地黄中主要的低聚糖进行研究,采用Waters XBridgeTM Amide 3.5 μm(4.6 mm×150 mm)色谱柱为固定相,乙腈-水-70∶30为流动相,流速为0.5 mL·min-1,柱温:25 ℃。ELSD检测器:漂移管温度40 ℃,雾化气体2.07 L·min-1,喷雾模式:冷却。结果方法下,鲜地黄中3种低聚糖分离效果良好,具有良好的线性范围,分别为0.184~9.2 μg (r=0.999 8),0.458~11.45 μg (r=0.999 7)和0.924~11.55 μg (r=0.999 2),平均加样回收率为96.94% (RSD,1.87%),98.87% (RSD,1.98%) 和101.02% (RSD,3.23%)。结论方法稳定、可靠、精密度高、重复性好,为有效控制鲜地黄药材的内在质量提供科学依据。

Abstract

OBJECTIVE To establish a HPLC - ELSD method for simultaneous determination of Sucrose,Raffinose and Stachyose in the fresh root of Rehmannia glutinosa. METHODS Chromatographic separation was performed on a Waters XBridgeTM Amide 3.5 μm(4.6 mm×150 mm) with mobile phase of acetonitrile- water (70∶30) at a flow rate of 0.50 mL·min-1 ,the drift tube temperature of ELSD was set at 40 ℃,and nitrogen gas was 2.07 L·min-1. RESULTS A good resolution and linear range were obtaind under this HPLC-ELSD condition.The calibration of Sucrose,Raffinose and Stachyose were linear over the the ranges of 0.184-9.20 μg(r=0.999 8),0.458-11.45 μg (r=0.999 7) and 0.924-11.55 μg (r=0.999 2),respectively,and the average recoveries were 96.94% (RSD,1.87%),98.87% (RSD,1.98%) and 101.02% (RSD,3.23%),respectively. CONCLUSION The method is simple,reliable,accurate and reproducible for quality control of fresh root of Rehmannia glutinosa.

关键词

鲜地黄 / 低聚糖 / 高效液相 - 蒸发光散射检测器 / 含量测定

Key words

Rehmannia glutinosa / oligosaccharides / HPLC - ELSD / determination

引用本文

导出引用
伊伟贞 李先恩 秦民坚 徐怡 刘燕. HPLC-ELSD法同时测定鲜地黄中3种低聚糖的含量[J]. 中国药学杂志, 2011, 46(13): 1038-1040
YI Wei-zhen;LI Xin-en;QIN Min-jin;XU Yi;LIU Yn. Simultaneous Determination of Three Oligosaccharides by HPLC - ELSD in the Fresh Root of Rehmannia glutinosa[J]. Chinese Pharmaceutical Journal, 2011, 46(13): 1038-1040

参考文献


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