Solvent Extraction is the process of extracting oil from oil-bearing materials by one way or another of Solvent. High temperature and high pressure process causes the oxidation of oil. Solvent Extraction is the advance process that is performed under very low temperature and vacuum to get the highest quality of oil. Solvent plants are used to extract oil directly from sunflower seeds, palm kernel, peanuts, copra, cottonseed, canola, castor and other materials.