Characterization of extraction and separation of rice bran oil rich in EFAusing SFE process

Rice bran oil contains palmitic acid, linolenic acid, linoleic acid, oleic acid, stearic acid, tocopherol, squalene, etc. The oil rich EFA (essential fatty acid) was extracted from the domestic brown rice bran using SCC (supe rcritical carbon dioxide), and the extracts were analyzed with gas chromato graphy-mass spectrometry (GC-MS). The extracted amount of rice bran oil was dependent upon the operating pressure and temperature, and the fatty acid composition of oil was varied with the reduced density (rho(r)) of the SCC. About 70-80% of rice bran oil was extracted in 4 h. Especially, squalene w hich was not found in solvent extract phase was identified in supercritical fluid extraction (SFE) phase only. (C) 1999 Elsevier Science B.V. All righ ts reserved.