ABSTRACT
Supercritical uid extraction (SFE) is a separation method that is based on the same basic principle with the more conventional separation processes of distillation and liquid solvent extraction, that is, they exploit phase equilibrium behavior between different states of matter at different operating conditions. SFE is essentially a typical solvent extraction with the basic difference to be that the supercritical (SC) solvent undergoes a change of state prior to the extraction process and changes the state again after the end of the process.
