响应面法优化甘肃平凉牡丹籽超声-微波提取工艺的研究

Optimization of ultrasonic-microwave extraction of peony seeds in Pingliang, Gansu Province by response surface methodology

以甘肃平凉油用牡丹为籽原料,以单因素实验结果作为研究基础,对超声-微波协同提取时间、超声、微波的功率、温度、料液比等影响因素进行试验,应用中心组实验设计方案,以牡丹籽得油率为响应值,进行超声-微波协同萃取牡丹籽油,找出了影响提取牡丹籽油的交互因素:以石油醚为提取溶剂时,选择1∶6~1∶9范围内的料液比,用400~800 W的微波在30℃~50℃下辐照6~8 min,同时在480~560 W超声功率下振荡10~20 min,牡丹籽粗油得油率最高为34%,微波温度和功率、超声功率和振荡时间、超声功率和料液比以及振荡时间和料液比之间交互作用显著。

Taking the peony for oil used in Pingliang of Gansu Province, as the raw material and the single factor experimental results as the research basis, the influencing factors such as ultrasonic-microwave synergistic extraction time, ultrasonic and microwave powers, temperature and solid-liquid ratio are tested. The experimental design scheme of the center group is applied to performing ultrasonic-microwave synergistic extraction of peony seed oil with the yield of peony seed oil as the response value. The optimum extraction process is found: when petroleum ether is used as the extraction solvent, the solid-liquid ratio of 1∶6-1∶9 is selected, and irradiated with 400-800 W microwave at 30-50 ℃ for 6-8 minutes and oscillated at 480-560 W ultrasonic power for 10-20 minutes. The highest peony seed crude oil yield is 34%. Compared with microwave or ultrasonic extraction alone, the extraction time is shorter and the oil yield is higher.