Isolation of Functional Fatty Acid in Cosolvent Induced SFE Process

공용매가 첨가된 초임계유체 추출공정에서 기능성 지방산의 추출

  • Lee, Seung Bum (Deparment of Chemical Engineering, Dankook University) ;
  • Park, Kyung Ai (Seoul Metropolitan Govemment of Health and Environment) ;
  • Hong, In Kwon (Deparment of Chemical Engineering, Dankook University)
  • Received : 1999.01.05
  • Accepted : 1999.02.26
  • Published : 1999.05.10

Abstract

The natural full-fat rice bran is reported to contain 8.4 to 14.7 wt % Lipids, but the amount and composition of bran depend on the type of rice, quality of paddy, pretreatments to paddy such as parboiling, type of milling system employed, and the degree of polishing. These lipids are usually mixtures of several class fatty acids containing palmitic acid, linolenic acid, linoleic acid, oleic acid, stearic acid, tocopherol, squalene, etc. In this study the oil rich essential fatty acid (EFA) including squalene was extracted from the domestic brown rice bran using supercritical fluid extraction (SFE) and cosolvent induced SFE process, respectively. And the extracts were analyzed with GC-MSD. 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 (${\rho}_{\gamma}$) of supercritical carbon dioxide. About 70~80% of rice bran oil was extracted in 4hrs. The cosolvent induced SFE process shortened the total extraction time, extracted greater amount of oil than SFE process. Especially squalene which was not found in solvent extract phase was identified in SFE and cosolvent induced SFE process.

Keywords

Rice Bran Oil;Essential Fatty Acid;SFE Process;Cosolvent

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