Nonlinear stress deformation behavior of interfaces stabilized by food-based ingredients

L.M.C. Sagis, K.N.P. Humblet-Hua, S.E.H.J. van Kempen

Research output: Contribution to journalArticleAcademicpeer-review

22 Citations (Scopus)

Abstract

Interfaces stabilized by food-based ingredients, such as proteins or glycolipids, often display nonlinear behavior when subjected to oscillatory dilatational deformations, even at the lowest deformation amplitudes which can currently be applied experimentally. Here we show that classical approaches to extract dilatational properties, based on the Young–Laplace equation, may not always be suitable to analyze data. We discuss a number of examples of foodingredient stabilized interfaces (interfaces stabilized by protein fibrils, protein–polysaccharide complexes and oligosaccharide–fatty aid conjugates) and show how an analysis of the dynamic surface tension signal using Lissajous plots and a protocol which includes deformation amplitude and droplet size variations, can be used to obtain a more detailed and accurate description of their nonlinear dilatational behavior.
Original languageEnglish
Article number464105
Number of pages9
JournalJournal of Physics-Condensed Matter
Volume26
DOIs
Publication statusPublished - 2014

Keywords

  • air-water-interface
  • fatty-acid esters
  • surface rheological properties
  • beta-lactoglobulin fibrils
  • liquid interfaces
  • amyloid fibrils
  • dilatational rheology
  • air/water interfaces
  • protein adsorption
  • bending rigidity

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