Abstract:
Compared with traditional extraction methods,supercritical CO
2 extraction(SCE)can bring not only better physical and chemical indexes of the obtained oils,but also higher content of unsaturated fatty acids in the obtained oils. For the extraction of complex multi-components raw materials,the comprehensive use of supercritical CO
2 extraction and other extraction methods can better improve the extraction rate and the quality of the target product. Meanwhile,SCE of plant functional oils was summarized in this paper,the principle and process of SCE of plant functional oils were introduced. Effects of control factors(extraction pressure,extraction temperature,extraction time,CO
2 flow,entrainer,physical properties of raw materials)of SCE on the oil extraction rate and quality of oils obtained by different methods were discussed. And the scope and prospect of supercritical CO
2 extraction technology were analyzed.