pH 6 for both non-homogenized and homogenized systems (Table 1).
The particles in the MWP systems had a lower ζ-potential at pH 6
than those in the WPI solutions at the same pH (~27–30 mV) (Klein,
Aserin, Ishai, & Garti, 2010). This could be due to the different structure
and properties of the particles in the system. The proteins in the MWP
ingredient would be expected to have been highly denatured because
of the processing steps involved in its preparation, whereas those in
the WPI ingredient would be expected to be closer to the native state.