Supercritical CO₂ Extraction of Oil from Atlantic Mackerel (Scomber scombrus) and Protein Functionality

Abstract

Supercritical carbon dioxide (SC-COZ) extraction temperature and pressure for oil removal from freeze-dried, fall Atlantic mackerel muscle were optimized. The effect of extraction conditions on pH and waterbinding potential (WBP) of the protein residue was evaluated. For the temperature range (35-55'(Z) and pressure interval (20.7-34.5 MPa), 34.5 MPa/35"C gave highest oil vield and concentration of o-3 fattv acids. SC-CO, eitractio'; at higher pressure levels caused slight decreases in protein residue pH. WBP of residual proteins was maximal at 1.49g H,O/g protein for 34.5 MPa/45"C. The high lipid removal and retention of protein functionality in the residue after oil extraction may make such processes useful for mture food applications.

Extraction of sunflower oil with supercritical CO2: Experiments and modeling

“…However, solubility of sunflower oil in supercritical CO 2 at the pressure of 20 MPa decreased significantly with temperature. Such retro-gradation behavior of solubility isotherms has been reported previous [24,25]. This is due to the fact that an increase in temperature at constant pressure leads to a drop in CO 2 density as well as an increase in the vapor pressure of solutes.…”

Fractionation of fish oil with supercritical carbon dioxide

“…The highest values for solubility found in this study were about 7.0 g oil/kg CO 2 at 29.4 MPa and the different temperatures, and higher values can be expected at higher pressures. For Atlantic Mackerel oil, the highest solubility observed was 14.21 g/kg CO 2 at 34.5 MPa and 308.15 K (Temelli et al, 1995).…”

Comparative study of digestive enzymes of squid (Todarodes pacificus) viscera after supercritical carbon dioxide and organic solvent extraction

“…Now a day, supercritical fluid extraction (SFE) technology is used as an alternative for lipid extraction to organic solvent extraction. Supercritical carbon dioxide (SCO 2 ) has been used for extraction of lipid from different marine organisms [8][9][10]. But attentions have been given on the supercritical fluid extracted essential oils for polyunsaturated fatty acids and other bioactive materials.…”