Abstract
Abstract A novel, inexpensive strategy was used to valorize fish canning industry by-products, aiming at ω -3 compounds and biodiesel production. Winterization and urea complexation methods were used to fraction the oil extracted from fish canning industry wastes. Urea complexation was the most efficient method, producing a liquid fraction with 99.99% ( w ∕ w ) of polyunsaturated fatty acid methyl esters (FAME) when methanol was used as solvent, and a solid fraction with 79.94% (w/w) of saturated and monosaturated FAME when ethanol was used as solvent, which was considered a potential feedstock for biodiesel production. The liquid fraction was further analysed by preparative HPLC analysis, producing an oil fraction with 99.44% ( w ∕ w ) ω -3 compounds, containing 89.25% eicosapentaenoic acid (EPA) ( w ∕ w ). The method here described has an enormous potential for fish canning industry waste valorization as it is easily scale-up, foreseeing an environmentally sustainable society.
Highlights
A novel, inexpensive strategy was used to valorize fish canning industry by-products, aiming at ω-3 compounds and biodiesel production
Urea complexation was more efficient than winterization
The liquid fraction was further analysed by preparative HPLC analysis
Summary
A novel, inexpensive strategy was used to valorize fish canning industry by-products, aiming at ω-3 compounds and biodiesel production. Environmental Technology & Innovation journal homepage: www.elsevier.com/locate/eti Valorizing fish canning industry by-products to produce ω-3 compounds and biodiesel
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