建立了一种用于分析太子参中环肽Pseudostellarin B的高效液相色谱法。该方法采用反相C18柱:流动相A为水,流动相B为乙腈,梯度洗脱,流速为1.0mL/min,紫外检测波长为203nm,柱温为30℃,外标法定量。结果表明,在0.5~20μg范围内标准曲线有良好的线性关系(r=0.9995),加标回收率为96.7%-104.5%,方法的精密度良好(平均RSD〈0.5%)。该方法可用于实际样品的测定。
A high performance liquid chromatographic (HPLC) method for the determination of Pseudostellarin B (cyclic peptide) in Taizishen ( Pseudostellaria heterophylla (Miq.) Pax) has been established. The separation was carried out on a C18 analytical column at 30 ℃ with a linear gradient elution of water (A) - acetonitrile (B). The flow-rate of 1.0 mL/min and U-V detection at 203 nm were used in this study. The experimental results indicate that a good linear range of 0.5- 20 μg (r =0.9995) could be obtained. The recovery test for Pseudostellarin B was in the range of 96.7% - 104.5%. The relative standard deviation was less than 1.8%. The results indicate that the method is sim- ple, rapid and accurate for the determination of Pseudostellarin B in Taizishen. The method is recommended to apply to the real sample analysis.