从制剂成本的角度，醇提的成本不会高于水提太多；

From the cost of Preparation, the cost of thin ethanol-extract could not higher than water-extract too much.

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方法以绿原酸含量和提取物得率为考察指标，通过对水提和水提醇沉两种方法进行比较。

Methods The extraction process was investigated by solvent extraction and ethanol precipitation, with extractive yield and chlorogenic acid as the indexes.

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结果1。紫苏子水提物、醇提物和醚提物均显示了程度不同的镇咳作用。

RESULTS 1. The water, alcohol and ether extracts of Perilla frutescens showed different antitussive effects.

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