Extraction and fractionation of PUFAs from fish oil with
supercritical fluid extraction using carbon dioxide (SFE) has generated
significant interest as a means to generate cleaner (residuefree),
higher quality PUFA extracts (Sahena et al., 2009). SFE using
non-polar CO2 is especially well suited to this application as the
modest conditions, critical temperature (CT) = 31 C, critical pressure
(CP) = 7.38 MPa, and low oxygen setting provides an environment
favourable for heat-sensitive and easily oxidised substances
such as x-3 PUFAs.