Université de Fribourg

Structure of β-lactoglobulin microgels formed during heating as revealed by small-angle X-ray scattering and light scattering

Moitzi, Christian ; Donato, Laurence ; Schmitt, Christophe ; Bovetto, Lionel ; Gillies, Graeme ; Stradner, Anna

In: Food Hydrocolloids, 2011, vol. 25, no. 7, p. 1766-1774

We have investigated the structure of microgels formed during heating of demineralized β-lactoglobulin (βlg) solutions at pH 5.9 by small-angle X-ray scattering (SAXS) and light scattering. First, unheated βlg solutions were characterized at different pH values between 2.0 and 7.0. At pH 5.9, βlg solutions contain mainly dimers (with a radius of approx. 2 nm), which coexist with a small...

Université de Fribourg

Simple transmission measurements discriminate instability processes in multiple emulsions

Vincent, Romaric R. R. ; Gillies, Graeme ; Stradner, Anna

In: Soft Matter, 2011, vol. 7, p. 2697-2704

Water-in-oil-in-water double emulsions (W1/O/W2) consist of water droplets (W1) dispersed in oil globules (O), which are then redispersed in an external aqueous phase (W2). This paper reports multiple light scattering investigations on W1/O/W2 double emulsions, the inner W1/O emulsion being a concentrated micron sized inverse emulsion, and the outer O/W2 emulsion being a dense direct emulsion....