Study on Optimization of Process for Extracting Ginger Oil by Supercritical CO_2 Extraction Technology

[Objective] The research aimed to optimize the process of extracting ginger oil by supercritical CO2 extraction technology.[Method] The ginger oil was extracted from dry ginger by supercritical CO2 fluid,and the effects of extraction pressure,extraction time and extraction temperature on extraction rate of ginger oil were studied.The optimum extraction condition of ginger oil was determined through orthogonal test.[Result] The optimum extraction process of ginger oil was extraction pressure of 35 MPa,extraction time of 2.5 h,extraction temperature of 40 ℃.Under this condition,the extraction rate of ginger oil was 2.86%.[Conclusion] The study can provide reference for scientists researching flavoring and manufacturers.