Academic Journal
Recovery of Omega-3-Rich Lipids: Toward the Sustainable Valorization of Sea-Bass Industry Side Streams.
| Title: | Recovery of Omega-3-Rich Lipids: Toward the Sustainable Valorization of Sea-Bass Industry Side Streams. |
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| Authors: | Semenoglou, Ioanna, Katsouli, Maria, Giannakourou, Maria, Taoukis, Petros |
| Source: | Separations (2297-8739); Apr2024, Vol. 11 Issue 4, p101, 14p |
| Abstract: | This study pertains to the selection of the appropriate process parameters of lipid extraction aimed at the valorization of sea-bass gutting and filleting side stream biomass. A comparative kinetic study between an environmentally friendly polar (ethanol) and a conventional non-polar solvent (hexane) was implemented to determine the effect of temperature, solvent to solid ratio and time, providing insights in terms of the yield recovery and quality of omega-3 fatty acids. Maximum recovery yield (43.8 and 34.0 g/100 g of dried gutting and filleting by-products, respectively) was achieved within 10 min. In gutting by-products, ethanol achieved full lipid recovery at 35 °C and a 50:1 ratio, while for hexane, the maximum yield was 83%. In the case of filleting side-streams, hexane achieved exhaustive recovery at a 50:1 ratio and 20 °C compared with ethanol, where a higher temperature (50 °C) was needed for exhaustive recovery to be achieved. Differences were attributed to the diverse fatty acid profiles among the two by-products, with 27.3% and 40.8% polyunsaturated fatty acids in viscera and fish frames, respectively. All extracts at 20 °C and 35 °C remained below the oxidation limit set by the Codex Alimentarius Commission (peroxide value < 5 m e q O 2 / k g o i l ; p-anisidine value < 20). Therefore, green solvents could assist conventional extraction, combining high efficiency and an improved environmental impact. [ABSTRACT FROM AUTHOR] |
| Subject Terms: | UNSATURATED fatty acids, OMEGA-3 fatty acids, FATTY acids, ETHANOL, FISH fillets, TEMPERATURE effect |
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| ISSN: | 22978739 |
| DOI: | 10.3390/separations11040101 |
| Database: | Complementary Index |
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