【摘要】 研究了夹带剂添加到超临界CO2流体萃取锦橙精油的工艺条件。获得萜烯烃类精油的最优工艺组合是:夹带剂为乙醇,添加量为CO2摩尔百分流量的5%,40℃,16MPa,精油得率为59.03‰;获得低萜精油的最优工艺组合是:夹带剂为乙酸乙酯,添加量为CO2摩尔百分流量的7%,45℃,16MPa,精油得率为8.79‰。运用傅立叶变换红外光谱仪对超临界CO2流体萃取锦橙精油和加入夹带剂萃取锦橙精油的红外图谱进行了比较,证明夹带剂在萃取过程中与锦橙精油中的不饱和键发生了反应,提高了超临界CO2流体对锦橙精油的提取率。更多还原

【Abstract】 Different kinds of modifiers were chosen, which add to the process of extracting citrus essential oil in supercritical CO2 fluid, the results showed that the technological conditions of the most amount of (d)-Limonene were ethanol, the ratio of mol flow rate CO2 is 5%, extracting container temperature 40 ℃, extracting container pressure 16 MPa, with 59.03‰ essential oil in separating container I; the optimum technological parameters of de-terpene were ethyl acetate, the ratio of mol flow rate CO2 is 7%, extracting container temperature 45 ℃, extracting container pressure 16 MPa, with 8.79‰ essential oil in separating container II. According to the FIR equipment, we may prove that modifiers and essential oil may make action in unsaturated chemical bond. So it made the higher extraction ration than only use supercritical CO2 fluid.更多还原