Mixed adsorption mechanism for the kinetics of BLG interfacial layer formation at the solution/tetradecane interface
Date
2017
Authors
Won, J.Y.
Gochev, G.
Ulaganathan, V.
Krägel, J.
Aksenenko, E.V.
Fainerman, V.B.
Miller, R.
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Journal article
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Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2017; 519:146-152
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Abstract
The adsorption kinetics of beta-lactoglobulin (BLG) at the water/tetradecane (W/TD) interface as studied by drop profile analysis tensiometry is significantly controlled by the diffusional transport in the aqueous solution bulk. However, due to the contact with the hydrophobic oil phase the protein molecules change their conformation in order to adapt to the interfacial environment. This conformational change can be expressed via the adsorption activity constant. The analysis of the dynamic interfacial tensions leads to much lower activities at short adsorption times and low surface coverages. This allows to conclude that in the early stage of the adsorption layer formation the structure of the BLG adsorption layer at the W/TD interface is similar to that at the water/air (W/A) interface.
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Data source: Supplementary material, https://doi-org/10.1016/j.colsurfa.2016.08.024
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Copyright 2016 Elsevier BV