The effect of DG on expansion of cereal snack pellets is investigated
by Case et al. (1992). At low to intermediate DG, the expansion
rate is linear with 1-DG. At DG > 0:75 the expansion rate
remains constant. However, the texture is said to respond in a
non-linear way: at low DG the snacks are hard and brittle, while
at high DG highly expanded – but very crumbly. Texture has an
optimum at the point where there is a transition between the linear
and constant regimes of expansion rate vs. DG. These findings are in
agreement with the above cited patent literature on potato snacks.