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RP-HPLC法测定鲜人参中丙二酰基人参皂苷的含量
RP-HPLC determination of the content of malonyl-ginsenosides in fresh root of Panax ginseng
【摘要】 目的:建立人参中丙二酰基人参皂苷含量的测定方法。方法:采用反相高效液相色谱法,以μ-Bondapak C-18(300mm×3.9 mm,5 μm)柱为分析柱,乙腈-0.05 mol·L-1磷酸二氢钾溶液(25:75)为流动相,柱温:35℃,检测波长:203 nm,流速:1 mL·min-1,以外标法检测。结果:丙二酰基人参皂苷 Rb1、Rb2、Rc 分别在0.02~1.19 mg·mL-1(r=0.9998)、0.02~0.99 mg·mL-1(r=0.9997)、0.01~0.83 mg·mL-1(r=0.9996)浓度范围内呈良好的线性关系。平均回收率(n=3)分别为103.0%(RSD=1.3%)和98.5%(RSD=1.0%)、102.4%(RSD=1.2%)和98.1%(RSD=0.6%)、102.1%(RSD=2.8%)和100.1%(RSD=1.0%)。结论:本法简便、准确、灵敏。
【Abstract】 Objective:To set up an assay method for the determination of malonyl-ginsenosides in fresh root of Panax ginseng.Methods:RP-HPLC was conducted on a μ-BondapakTM C-18 (300 mm×3.9 mm,5 μm) with acetonitrile-0.05 mol·L-1 potassium dihydrogen phosphate(25:75)as mobile phase,column temperature at 35 ℃,detecting at 203 nm and flow rate 1.0 mL·min-1.Te external standard method was used.Results:The linear ranges for malonyl-ginsenoside Rb1,Rb2 and Rc were 0.02-1.19 mg·mL-1(r=0.9998),0.02-0.99 mg· mL-1(r=0.9997),0.01-0.83 mg·mL-1(r=0.9996),respectively;The average recoveries (n=3) were 103.0% (RSD=1.3%) and 98.5% (RSD=1.0%),102.4% (RSD=1.2%) and 98.1% (RSD=0.6%), 102.1% (RSD=2.8%)and 100.1% (RSD=1.0%),respectively.Conclusion:The method is simple,accurate and sensitive.
【Key words】 fresh root of Panax ginseng; malonyl-ginsenosides; HPLC; content determination;
- 【文献出处】 药物分析杂志 ,Chinese Journal of Pharmaceutical Analysis , 编辑部邮箱 ,2007年09期
- 【分类号】R284
- 【被引频次】14
- 【下载频次】325