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采用正交试验法对咳喘平片提取工艺进行优选，以总黄酮和总生物碱含量为指标，以加水量、提取时间、提取次数和醇沉浓度为因子进行试验。结果表明，咳喘平片最佳提取工艺为药材１２ 倍量水提取３ 次，每次２ｈ，醇沉浓度为８０％ 。
Orthogonal test was used to optimize the extraction process of Kechuanping Tablet. The content of total flavonoids and total alkaloids were used as indexes, and the amount of water, extraction time, extraction times, and alcohol concentration were used as factors. The results showed that the optimal extraction process of Kechuanping Tablet was 12 times the amount of water extracted from medicinal materials 3 times, each time 2 hours, the alcohol concentration was 80%.