The stability of feed for cheese powder production was evaluated
using centrifugation. The expected large difference in stability
between feeds produced with and without DSP was visible after
centrifugation at 188 g following the second minute of centrifugation,
suggesting that this method could also be applicable for
detecting smaller differences in cheese feed stability. A time
dependent increase in cheese feed stability during holding at 60 C
was observed for feeds produced with DSP, whereas cheese feeds
produced without DSP exhibited no difference in stability. The
functional action of DSP in a cheese feed system apparently continues
during holding at high temperature, possibly as a time
dependent shift in the mineral balance of the system leading to
continued dispersion of casein and further proteineprotein interactions
and fat emulsification. For production of cheese feeds
without emulsifying salts other approaches than holding are
needed to increase stability.