摘要
目的:研究超临界CO2萃取高原香薷精油的最佳工艺条件.方法:通过正交试验研究萃取压力、温度、萃取时间、CO2流量对萃取率的影响.结果:通过各因素级差大小的比较可知,萃取压力是影响萃取的最主要的因素,其他影响因素依次为萃取温度、CO2流量,萃取时间影响最小.结论:优选出最佳萃取条件为萃取压力30MPa、萃取温度50℃、萃取时间1.5h、CO2流量25kg·h-1.在此条件下的精油收率为2.05%.
Objective To study the optimal conditions for extracting Elsholtzia feddei Benth essential oil with supercritical CO2 fluid. Methods：The influence of extraction pressure, temperature, extraction time and flow rate of CO2 on the extraction rate were discussed by orthogonal experiment. Results： By comparing the grading of these factors, the pressure was the most important factor, extracting temperature was less, flow rate of CO2, and extraction time was the least. Conclusion： The experiments indicate that the optimum extraction pressure, temperature, extraction time, flow rate of CO2 was 30 MPa, 50℃, 1.5 h, 25 kg· h-1, respectively. The yield of SFE - CO2 extracts is 2.05 % under the best conditions.
出处
《西北民族大学学报（自然科学版）》
2009年第3期37-39,共3页
Journal of Northwest Minzu University(Natural Science)
基金
西北民族大学青年教师科研基金项目X2007-005
关键词
超临界CO2
萃取
高原香薷
精油
supercritical fluid extraction
Elsholtzia feddei Benth
essential oil
作者简介
[作者简介]康淑荷（1972-），女，甘肃会宁人，副教授，主要从事天然产物的研究与开发．
