Effects of Aqueous Isotopic Substitution on the Adsorption Dynamics and Dilational Rheology of β-Lactoglobulin Layers at the Water/Air Interface
Georgi G. Gochev,
Emanuel Schneck,
Reinhard Miller
Abstract:The effect of the degree of isotopic substitution of the aqueous medium on the adsorption kinetics and the surface dilational rheological behavior at the water/air interface of the globular protein β-lactoglobulin was investigated. Aqueous solutions with fixed concentrations of 1 μM protein and 10 mM hydrogenous buffer with controlled pH 7 were prepared in H 2 O, D 2 O, and an isotopic mixture of 8.1% v/v D 2 O in H 2 O (called air contrast matched water, ACMW). Using a bubble shape analysis tensiometer, we ob… Show more
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