The results indicated that the values for the oil content and the fatty acid compositions of supercritical and of hexane extracts are of agreement with the reported data from literature. The global extraction yield would be increased with pressure increased,but the particle size had little influence on the global extraction yield. The maximum oil extraction recovery was 99.1%, which was obtained when cold pressed extraction followed by supercritical extraction at 400 bar and 60 ◦C was employed.