The effects of process parameters: pressure (200-400 bar), temperature (313-333 K), and flow rate (0.11-0.27 kg/h) on the efficiency of extraction process of Argan oil by supercritical CO 2 were investigated using response surface methodology and mathematical modelling (Sovová's mathematical model). The fastest extraction kinetics corresponding to the optimal operating conditions were obtained at 400 bar, 333 K at a CO 2 flow rate of 0.11 kg corresponding to a residence time of about 8.8 min. A tocopherol rich oil can be obtained at the beginning of the extraction experiment.