结果3种提取方法中回流提取的提取物中岩白菜素含量最高，正交实验优化条件为：料液比为1：15，提取时间为1.5 h，提取次数1次。
ResultsThe optimum parameters of extracting bergenin were as follows: extracting for 1.5 hours, one time, and 1:15 of the ratio of material and solvent.
乳状液稳定性的检测结果，测其质量比为0.59%，达到稳定体系的要求。
The testing result of emulsion stability, its quality ratio is 0.59%, reach the request for stabilizing the system.
两种控制方法以塔顶产品的液相轻组分浓度为被控变量，回流比为控制量。
In this paper, the controlled object is concentration of distillate, reflux ratio is selected as the manipulated variable.
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