HPLC法同时测定抗感利咽糖浆中黄芩苷和虎杖苷的含量

目的：建立一种同时测定抗感利咽糖浆中黄芩苷、虎杖苷含量的高效液相色谱法。方法：采用Waters SunFire C18色谱柱（250 mm×4.6 mm,5μm）；乙腈为流动相A,0.2%磷酸溶液为流动相B,梯度洗脱,流速为1.0 ml·min-1,检测波长为284 nm,柱温为30℃。结果：黄芩苷、虎杖苷与其他成分分离度良好,无干扰；黄芩苷在32.0~480.0μg·ml-1的范围内有良好的线性关系,平均回收率为98.71%,RSD为0.67%；虎杖苷在16.0~240.0μg·ml-1范围内有良好线性关系,平均回收率为97.02%,RSD为1.03%。结论：所建立HPLC法可同时测定抗感利咽糖浆中黄芩苷和虎杖苷的含量,方法准确度高,稳定性好,可作为该制剂的含量测定方法。

Determination of Baicalin and Polydatin in Kanggan Liyan Syrups by HPLC

Objective：To establish an HPLC method for the determination of baicalin and polydatin in Kanggan Liyan syrups. Methods：The samples were analyzed on an Waters SunFire C18 column with the mobile phase A of acetonitrile and the mobile phase B of 0. 2% phosphoric acid solution with gradient elution. The flow rate was 1. 0 ml·min-1 , the detection wavelength was 284nm,and the column box temperature was 30℃. Results：Baicalin and polydatin could be separated effectively without interference. The linear range of baicalin was 32. 0-480. 0 μg·ml-1 and the average recovery was 98. 71%（RSD=0. 67%,n=5）. The linear range of poly-datin was 16. 0-240. 0 μg·ml-1 and the average recovery was 97. 02%（RSD=1. 03%,n=5）. Conclusion：The method is accurate and stable, and can be used in the determination of Kanggan Liyan syrups.