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...