SC-CO2 extraction has become an important separation technique
With this technology, it is possible to extract heat sensitive, easily
oxidized compounds such as PUFAs, and to avoid using any toxic
solvent like n-hexane, leaving residues in the product, since CO2 is
non-toxic, non-flammable, inexpensive and easily separated from
the extract and from the solid matrix. Supercritical carbon dioxide
(SC-CO2) has been established as a good alternative solvent
for lipid extraction, such as in the extraction of PUFAs from fish
lipids [8,18], and the extraction of oil from grape seeds [19], soybean
[20], amaranth seeds [21] and hazelnuts [22]. Even though