目的 优选止咳平喘颗粒处方药材的提取工艺。方法 以麻黄碱、连翘酯苷A提取率为指标,以乙醇体积分数、乙醇倍量、提取时间、提取次数为因素,采用L₉(3⁴)正交试验对提取工艺进行优选。结果 最佳提取工艺条件为65%乙醇,回流提取2次,每次8倍量,每次1 h。结论 优选的止咳平喘颗粒处方药材提取工艺条件合理、可行。

Objective To optimize extraction process on Zhike Pingchuang Granula prescription by orthogonal test. Methods With extracting rates of ephedrine and forsythoside A as indexes, meanwhile ethanol concentration, amount of solvent, extraction duration, and extraction times as investigation factors, conditions for extraction process were optimized by L₉(3⁴) orthogonal test. Results The optimum extraction process conditions were as follows: eight volumes of 60% ethanol and reflux extracting for two times with 1 h for each time. Conclusion The optimized extraction technology is reasonable and feasible for Zhike Pingchuang Granula prescription.