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Lipid oxidation products in model food emulsions: do they stay in or leave droplets, that's the question. | LitMetric

Lipid oxidation products in model food emulsions: do they stay in or leave droplets, that's the question.

Food Chem

Laboratory of Food Process Engineering, Wageningen University, P.O. Box 17, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands; INRAE, BIA, 44000 Nantes, France. Electronic address:

Published: March 2023

AI Article Synopsis

Article Abstract

Lipid oxidation is a major factor limiting the shelf life of food and other emulsion products. In this work, we explore which lipid oxidation products may transfer between oil droplets in model food emulsions stabilized by excess amounts of surfactant, and whether this affects the overall reaction. No significant differences in concentrations of triglyceride-bound hydroperoxides were found before and after mixing 'clean' oil droplets with pre-oxidized ones. Shorter and more hydrophilic lipid oxidation products, such as 4-hydroperoxy-2-nonenal and 2,4-decadienal, were found to equilibrate between oil droplets within 30 min. Adding exogenous 4-hydroperoxy-2-nonenal to an emulsion led to overall higher lipid oxidation values, although this effect was not systematic nor instantaneous. Therefore, it may be questioned whether transfer and subsequent initiation are always relevant for oxidizing emulsion systems. In future research, this question should be addressed for complex emulsions that are closer to real-life food products.

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Source
http://dx.doi.org/10.1016/j.foodchem.2022.134992DOI Listing

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