“…Supercritical CO 2 extraction is also commonly used in the extraction of oils and fats, which has the advantages of low cost, nontoxicity, and environmental friendliness. The density, viscosity, and diffusion coefficient of CO 2 can be controlled by adjusting the temperature and pressure of SCO 2 , achieving the aim of improving the extraction rate or selectivity of oil and fat (Cvjetko et al, 2012;Jokić, Bijuk, Aladić, Bilić, & Maja, 2016;Li, Xia, Vazquez, & Song, 2017). However, the pressure of supercritical extraction is high and the equipment is expensive (Sahena et al, 2009), which have kept the technology from being widely used in industries.…”