Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A Circular Economy Approach to Omega-3 Extraction

Version 1 : Received: 1 February 2019 / Approved: 3 February 2019 / Online: 3 February 2019 (02:58:23 CET)

A peer-reviewed article of this Preprint also exists.

Journal reference: ChemistrySelect 2019
DOI: 10.1002/slct.201900851


Fish oil rich in polyunsaturated omega-3 fatty acids is extracted in high yield from anchovy filleting waste using d-limonene as green biosolvent in a simple solid-liquid extraction performed by mechanically stirring and maceration followed by limonene removal via evaporation under reduced pressure. As limonene is renewably obtained from waste orange peel, this protocol establishes a circular bioeconomy method to obtain valued omega-3 extracts from biowaste available worldwide in several million t/year amount. The method closes the materials cycle and opens the route to full valorisation of an important biological resource so far mostly discarded as waste. Significant economic opportunities benefiting local communities, the ecosystem and public health are anticipated.


anchovy; omega-3; limonene; circular economy; fish processing waste; marine fishery discards


CHEMISTRY, Food Chemistry

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