Supercritical Carbondioxide Extraction (SCE) is a process for the production of oil with high yields that do not use organic solvents. In this process, the oil is dissolved in CO2 and extracted from the plant material [95]. SCE method developed by Yan et al. [96] resulted in the actual extraction rate 37.45%; the final oil product con­tained 0.79 mg/g of KOH and 3.63 meq/g of peroxide value. Here, seeds of J. cur­cas were collected and powdered. The extraction pressure was 43 MPa, temperature for the extraction was 45°C, the flow rate of CO2 was 20 kg/h, and the extraction time was 80 min. Even though the cost of supercritical extraction methods was higher, the oil quality was the best and refining was not needed [96] .