SUPERCRITICAL CARBON-DIOXIDE EXTRACTION OF WHEAT PLUMULE OIL

Supercritical carbon dioxide was employed to extract wheat plumule oil in this study. Effects of pressure, temperature, CO2 solvent flows an d extraction time on the extraction efficiency were investigated. Thre e models were set up to describe extraction yield-pressure-temperature , extraction yield-pressure-solvent flows and extraction yield-pressur e-extraction time relationships, respectively. A good agreement betwee n predicted values and experimental values was found. By models the op timum processing conditions and quasi-equilibrium conditions of extrac tion systems can be determined. It contributes to the design and scale -up of process. (C) 1998 Elsevier Science Limited. All rights reserved .