The marked changes in the protein composition of casein micelles
in heated pH adjusted milk samples (Fig. 1A), and their particle
sizes relative to unheated milk samples (Fig. 1B) suggest that
the properties of the milk samples may be modified. The viscosities
of heated pH-adjusted milk samples at their natural total solids
concentrations were markedly different, with those heated at lower
pH having higher viscosities than those heated at higher pH
(Anema et al., 2004). An investigation was conducted to see
whether the viscosity differences were maintained at higher milk
solids concentrations