Modeling of enzymatic transesterification for omega-3 fatty acids enrichment in fish oil.

Autor: Ongis M; Group of Energy Conversion Systems, Department of Energy, Politecnico di Milano, via Lambruschini 4a, 20156, Milano, Italy; Inorganic Membranes and Membrane Reactors, Sustainable Process Engineering, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600, MB, Eindhoven, The Netherlands. Electronic address: michele.ongis@polimi.it., Liese D; Enzymicals AG Walther-Rathenau-Straße 49a, 17489, Greifswald, Germany., Di Marcoberardino G; Dipartimento di Ingegneria Meccanica e Industriale, Università degli Studi di Brescia, via Branze 38, 25123, Brescia, Italy., Gallucci F; Inorganic Membranes and Membrane Reactors, Sustainable Process Engineering, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600, MB, Eindhoven, The Netherlands., Binotti M; Group of Energy Conversion Systems, Department of Energy, Politecnico di Milano, via Lambruschini 4a, 20156, Milano, Italy. Electronic address: marco.binotti@polimi.it.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2025 Jan 15; Vol. 463 (Pt 3), pp. 141379. Date of Electronic Publication: 2024 Sep 20.
DOI: 10.1016/j.foodchem.2024.141379
Abstrakt: Mathematical models of transesterification commonly assume that oil is a mixture of triacylglycerols, where each component has only one type of acid attached. This article aims to show how a different assumption on acid distribution affects the results of acylglycerols fraction composition. Experiments of fish oil ethanolysis have been performed at different enzyme loadings and ethanol concentrations, leading to enrichments from 35 % to 52 % of ω3 mass fraction in acylglycerols, by losing 12.1 % of ω3 as ethyl esters. A kinetic model is developed assuming both all acids of the same type on each acylglycerol and all acids randomly distributed on the available positions. The two different assumptions showed strong discrepancies on the acylglycerols fraction compositions predictions, demonstrating how the initial fatty acids distribution is important when an accurate description of the acylglycerols fraction is desired.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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