[关键词]
[摘要]
目的 建立反相高效液相层析(RP-HPLC)法同时测定溪黄草不同部位中5个对映-贝壳杉烷型二萜类延命素[enmein,(1)],黄花香茶菜甲素[sculponeatin A,(2)],诺多星[nodosin,(3)],毛果青茶菜素[isodocarpin,(4)]和毛栲利素[lasiokaurin,(5)]含量的方法,并进行多批次药材成分分析,为溪黄草质量评价提供依据。方法采用Kromasil C18色谱柱(4.6 mm×250 mm,5 μm),流动相为甲醇-0.1 %甲酸,梯度洗脱,流速0.7 mL•min-1,检测波长254 nm。结果 5个二萜的标准曲线及线性范围依次为:(1)Y=5246.4X+13.86(0.075~1.50 μg,r=0.9999);(2)Y=4673.4X+78.09(0.121~2.43 μg,r=0.9999);(3)Y=3459.4X+22.33(0.372~7.43 μg,r=1);(4)Y=4432.8X+14.71(0.144~2.88 μg,r=1);(5)Y=2434.1X+0.69(0.010~1.960 μg,r=0.9999)。平均加样回收率为99.14 %~100.7 %,RSD为0.48 %~2.53 %。结论 经过系统的方法学考察,该法简便,准确,重复性好,可用于溪黄草药材的质量分析及控制。
[Key word]
[Abstract]
Objective To develop a reverse phase HPLC method for the simultaneous determination of five ent-kauranes diterpenoids of enmein(1),sculponeatinA(2),nodosin(3),isodocarpin(4) and lasiokaurin(5) in Herba Rabdosiae Serrae and to assess their quality. Methods The samples were separated on a Kromasil RP-C18(4.6 mm×250 mm,5 μm) column eluted with methanol and 0.1 % formic acid as mobile phase in gradient elution. The flow rate was 0.7 mL•min-1,and the detection wavelength was set at 254 nm. Results The calibration curves and linear range of the above five diterpenoids were determined as(1)Y=5246.4X+13.86(0.075~1.50 μg,r=0.9999),(2) Y=4673.4X+78.09(0.121~2.43 μg,r=0.9999),(3)Y=3459.4X+22.33(0.372~7.43 μg,r=1),(4)Y=4432.8X+14.71(0.144~2.88 μg,r=1),(5)Y=2434.1X+0.69(0.010~1.960 μg,r=0.9999),respectively. The average recovery of the analytes were from 99.14 % to 100.7 % and the RSD values were from 0.48 % to 2.53 %. Conclusion The method is simple,accurate and repeatable,and can be used for the quality assessment of Herba Rabdosiae Serrae.
[中图分类号]
R284.1
[基金项目]
国家自然科学基金资助项目(81173535)。