“…R-114, Flawil, Switzerland) operated under vacuum conditions. SW used for culture medium was sterilized at 121°C for 15 min (Dembczynski & Jankowski, 2002), whilst SW and concentrated sweet whey (CSW) used as emulsifiers were subjected to heat treatment at 80 ± 1°C for 10 min (Lobato-Calleros, Martínez-Torrijos, Sandoval-Castilla, Pérez-Orozco, & Vernon-Carter, 2004). It is well known that heat treatments at high temperatures (in particular at >60°C temperatures) induce denaturation and aggregation of whey proteins (Vasbinder, Alting, Visschers, & de Kruif, 2003), enhancing their adsorption at the interface and resulting in the formation of a thin, gel-like layer (Kiokias, Dimakou, & Oreopoulou, 2007).…”