超临界二氧化碳流体萃取冷蒿挥发油的实验研究

Studies on the Extraction of Arteisia Frigida by Supercritical Fluid CO_2

利用超临界二氧化碳流体萃取试验装置,以二氧化碳为萃取剂,对冷蒿挥发油萃取率的影响进行了试验研究,分析了萃取压力、萃取温度、二氧化碳流量及萃取时间等因素对冷蒿挥发油萃取率的影响,由此确定了超临界二氧化碳萃取冷蒿挥发油的较佳工艺条件:萃取压力30MPa,萃取温度35℃～40℃,萃取时间为2h,二氧化碳流量25m3/h。

The extraction technologies of Arteisia frigida oil by supercritieal fluid CO2 were investigated and the optimal extraction conditions were obtained. It showed that Arteisia frigida oil with high quality could be obtained at the pressure of 30MPa, the temperature of 35 - 40 degree,the flow rate of 25 m^3/h and the time of 2h.