Study of the influence of process parameters on liquid and supercritical CO2 extraction of oil from rendered materials: Fish meal and oil characterization

- Pressurized CO2 extraction of remaining fat from fish meal has been carried out.
- Extraction may be controlled by the solubility of the oil in CO2 in the first stage.
- The lowest fat content in the fish meal was 0.7% at 39.5 MPa and 40 °C.
- Production of fish protein concentrates at low operating T is beneficial.
- Fish meal after SC-CO2 extraction presents lighter colour than the original fish meal.