3.2.1. Effect of the matrix
The rheological responses of the blank SPS dough and blank
DWS dough are shown in Fig. 2, when the volume fraction of BP is zero.
The dough made of DWS has a modulus almost two orders
of magnitude higher than the SPS dough.
This is caused by the fact that DWS contains gluten which is known to produce a very strong viscoelastic network, formed by chemical cross-linking of protein
polymers (Bache and Donald, 1998).
For starch-based matrices, no covalent cross-links exist, explaining the much lower modulus of the starch systems.