Supercritical CO₂ Extraction of Oil and Residual Proteins from Atlantic Mackerel (Scomber scombrus) as Affected by Moisture Content

Abstract

Lipid composition of supercritical CO 2 (SC-CO 2 ) extracts, residual oil in muscle and changes in sarcoplasmic proteins after extraction of Atlantic mackerel were characterized. Dehydration of the muscle to 10.2% (w/w) resulted in high oil yield with minimum changes in protein content and composition. Sarcoplasmic protein content of fish muscle following SC-CO 2 treatment was lower than that of original muscles at all moisture levels (3.8-64%, w/w). Analysis of sarcoplasmic proteins by capillary electrophoresis indicated aggregation of low molecular weight proteins during SC-CO 2 extraction. SC-CO 2 -extracted muscle also had lighter color than original samples. The SC-CO 2 extraction showed potential to provide high quality oil and protein meal.

Comparison of low‐temperature processes for oil and coenzyme Q10 extraction from mackerel and herring

“…The increase of yield of oil with an increase of CO 2 flow rate or cosolvent addition was in agreement with earlier studies using various materials [19,21,[39][40][41]. Moreover, it is worth noting that yields of oil obtained from mackerel lyophilizates were generally higher than those reported earlier using various moisture contents [42].…”

Extraction and Characterization of Bioactive Compounds with Health Benefits from Marine Resources: Macro and Micro Algae, Cyanobacteria, and Invertebrates

“…SFE using CO 2 as the extracting solvent has been widely employed for fi sh oil extraction due to the good solubility of fi sh oil and its individual components in CO 2 (Rubio-Rodríguez et al 2010 ) . Dunford et al ( 1997Dunford et al ( , 1998 investigated the effect of moisture content on mackerel oil extracted by SC-CO 2 at 345 bar and 35°C, concluding that the extraction yield increased when fi sh muscle moisture content decreased (Dunford et al 1997 ) . They also developed a mathematical model based on the interaction between oil and water in the fl uid phase of SFE to explain the extraction behavior (Dunford et al 1998 ) .…”

Capillary electrophoresis for the analysis of food proteins of animal origin

“…Modifications on the sarcoplasmic proteins of Atlantic Mackerel after supercritical CO 2 oil extraction, mainly aggregation of the low-molecular- weight proteins to form larger aggregates, were evaluated by SDS-CGE, that allowed the classification of sarcoplasmic proteins according to their molecular weight [117].…”