Deposition of heated whey proteins on a chromium oxide surface.

Th. Jeurnink, M. Verheul, M.A. Cohen Stuart, C.G. de Kruif

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26 Citations (Scopus)

Abstract

Whey protein solutions were given different heat treatments after which their deposition on a chromium oxide surface (the outer layer of stainless steel) was measured by reflectometry. The deposition was studied under controlled flow conditions by using a stagnation point flow configuration. The rate of deposition is related to a model for heat-induced denaturation. It predicts an activation of -lactoglobulin (-lg) and subsequent aggregation. Deposition of more than a monolayer requires the presence of activated -lg molecules near the surface. It was possible to quantify the rate of deposition by relating it to the concentration of activated molecules. The deposition process is determined by a combination of factors: the reaction by which the activated molecules are formed; their transport to the surface; and the subsequent sticking probability.
Original languageEnglish
Pages (from-to)291-307
JournalColloids and Surfaces. B: Biointerfaces
Volume6
DOIs
Publication statusPublished - 1996

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