On the link between surface rheology and foam disproportionation in mixed hydrophobin HFBII and whey protein systems

► Higher HFBII-fraction needed for HFBII-dominance in spread vs. adsorbing layers. ► HFBII becomes more dominant upon sequential deformation cycles of a mixed surface. ► We propose that multi-layer formation at the surface explains the above behaviour. ► Foam coarsening corresponds well to dilational properties of adsorbing layers.