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Journal Articles Advances in Colloid and Interface Science Year : 2022

Interfacial protein-protein displacement at fluid interfaces

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Abstract

Protein blends are used to stabilise many traditional and emerging emulsion products, resulting in complex, non equilibrated interfacial structures. The interface composition just after emulsification is dependent on the competitive adsorption between proteins. Over time, non-adsorbed proteins are capable of displacing the initially adsorbed ones. Such rearrangements are important to consider, since the integrity of the interfacial film could be compromised after partial displacement, which may result in the physical destabilisation of emulsions. In the present review, we critically describe various experimental techniques to assess the interfacial composition, properties and mechanisms of protein displacement. The type of information that can be obtained from the different techniques is described, from which we comment on their suitability for displacement studies. Comparative studies between model interfaces and emulsions allow for evaluating the impact of minor components and the different fluid dynamics during interface formation. We extensively discuss available mechanistic physical models that describe interfacial properties and the dynamics of complex mixed systems, with a focus on protein in-plane and bulk-interface interactions. The potential of Brownian dynamic simulations to describe the parameters that govern interfacial displacement is also addressed. This review thus provides ample information for characterising the interfacial properties over time in protein blend-stabilised emulsions, based on both experimental and modelling approaches.

Dates and versions

hal-03700013 , version 1 (20-06-2022)

Licence

Attribution - CC BY 4.0

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Cite

Emma B.A. Hinderink, Marcel B.J. Meinders, Reinhard Miller, Leonard Sagis, Karin Schroën, et al.. Interfacial protein-protein displacement at fluid interfaces. Advances in Colloid and Interface Science, 2022, 305, pp.102691. ⟨10.1016/j.cis.2022.102691⟩. ⟨hal-03700013⟩

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