The effect of the concentration of ATS on viscosity (at 50 s1
) and
particle size of the protein flocs in stirred yoghurt is shown in Fig. 5.
A reduction of the fat content from 3% to 1.5% resulted in
a decreased viscosity and an increased particle size. The addition of
ATS (0.5e1.8%) to stirred yoghurt with 1.5% fat increased the
viscosity and decreased the particle size, compared with the
reference with 3% fat. The use of 0.5% ATS resulted in yoghurt with
similar viscosity but smoother structure compared with the reference.
It is expected that the presence of ATS at concentrations