Abstract
Emulsified systems are used in many daily-life applications, and for practical and economic reasons, it is important to improve our knowledge on the factors that affect their physical and chemical stability. The effects of droplet size on the oxidative stability of oil-in-water emulsions have been much less investigated than those on the physical stability and contradictory results are often found in, apparently, similar emulsified systems. The oxidative stability of emulsions depends on the effective concentration of antioxidants (AOs) in the interfacial region of the emulsions, as demonstrated by employing a pseudophase kinetic model. The model, in turn, is based (among others) on the assumption that the distributions of reactants between the oil, water and interfacial regions are independent of the droplet sizes. In this chapter, we aim to provide an update of recent reported results designed to prove, or discard, whether droplet sizes have, or do not have, an effect on the distributions and on the effective concentrations of antioxidants in the different regions of the emulsions and, consequently, on their antioxidant efficiency.
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Costa, M., Losada-Barreiro, S., Bravo-Díaz, C., Paiva-Martins, F. (2022). Effects of Emulsion Droplet Size on the Distribution and Efficiency of Antioxidants. In: Bravo-Diaz, C. (eds) Lipid Oxidation in Food and Biological Systems. Springer, Cham. https://doi.org/10.1007/978-3-030-87222-9_10
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