Milyaeva OY, Akentiev AV, Bykov AG, Loglio G, Miller R, Portnaya I, Rafikova AR, Noskov BA. Dynamic Properties of Adsorption Layers of κ-Casein Fibrils.
LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023;
39:15268-15274. [PMID:
37867296 DOI:
10.1021/acs.langmuir.3c01950]
[Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
The dynamic surface properties of native κ-casein solutions and aqueous dispersions of its fibrils differ significantly from the corresponding properties of the systems with globular proteins. The dependence of the dynamic surface elasticity of κ-casein solutions on surface pressure has a local maximum, indicating partial displacement of macromolecules from the proximal region of the surface layer to the distal one. This dependence becomes monotonic for fibril dispersions, similar to the results for dispersions of globular protein fibrils, but unlike the latter case, the surface elasticity close to the steady state reaches values that are approximately four times higher than the data for native protein solutions at the same concentrations.
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