中文摘要：

以红景天为原料,采用微波辅助的方法优化了红景天苷和酪醇的提取工艺.先采用单因素实验考察了提取剂种类/浓度、温度、时间、液固比对目标物提取的影响,然后选择提取时间、乙醇浓度、液固比3个因素为自变量,采用响应曲面法的Box-Behnken中心组合试验设计研究各因素及其交互作用对红景天苷和酪醇提取率的影响,同时建立响应曲面回归模型用以估计红景天苷和酪醇的最佳提取条件,得到最佳提取工艺条件为提取时间35 min、乙醇质量分数20%、液固比10∶1;在此条件下,做3次平行实验,红景天苷和酪醇提取率为0.60%、0.16%,与模型预测值基本相符.

英文摘要：

A microwave-assisted extraction method of salidroside and tyrosol from the Rhodiola was optimized by response surface method（RSM）. The extraction process were simulated and the main factors affecting the extraction,such as the kinds and concentrations of solvent,liquid / solid ratio of solvent to sample,irradiation time,irradiation temperature were investigated. Based on single factor experiments,Box-Behnken central composite experimental design of RSM was used to explore the effects of extraction time,ethanol concentration,liquid-solid ratio and their cross-interactions on the yields of salidroside and tyrosol. Two extraction regression equations of salidroside and tyrosol were established respectively through experiments and the optimal conditions obtained by RSM are extraction time of 35 min,ethanol concentration of 20%,solid-liquid ratio of1 ∶10. The yields of salidroside and tyrosol are 0.597 2% and 0.158%,respectively,which is well agreement with the yield predicted by the model.