目的以欧前胡素含量为试验指标，优化微波萃取白芷有效成分的提取工艺。
目的：建立以反相高效液相色谱法测定清瘟解毒片中欧前胡素含量的方法。
1·Methods: Polysaccharide, imperatorin and extractives in different varieties were detected according to document and Chinese Pharmacopeia.
方法：接文献方法和药典规定检测北沙参不同栽培品种的多糖、欧前胡素、浸出物等成分含量。