超临界CO_2萃取玉米胚芽油的工艺研究

Study on the Extraction Process of Corn Oil by Supercritical CO_2

目的:研究超临界CO_2萃取玉米胚芽油的最佳工艺条件.方法:以超临界CO_2法萃取玉米胚芽油萃取率为评价指标,采用单因素和正交实验对萃取的工艺条件进行优化.结果:确定超临界CO_2萃取玉米胚芽油的最佳工艺条件为:萃取压力25 MPa,萃取温度40℃,颗粒度50目,萃取时间50 min,萃取率可达到24.54%以上.结论:优选的超临界CO_2萃取玉米胚芽油的工艺简单易行,稳定性好.

Purpose： the optimum technological conditions for the extraction of corn oil by supercritical CO2 were studied.Methods： the extraction rate of corn oil by supercritical CO2 was the evaluated method,and the extraction process was optimized by single factor and orthogonal experiment. Results： the optimum extraction conditions were as follows： the extraction pressure 25 MPa,the extraction temperature 40 ℃,the particle size 50 mesh sizes,and the extraction time 50 min,the extraction rate can reach more than 24.54%.Conclusion： the optimized process of supercritical CO2 extraction of corn germ oil is simple and stable.