The determination of the dynamic moduli can indicate changes
in the structures of macromolecule solutions with greater precision.
The presence of polyols, and the increase in their concentrations
resulted in more structured systems. Guar gum showed
viscoelastic behavior strongly influenced by high polyol concentrations
(40 g/100 g), which could be connected to the fact that the
strength and density of the hydrogen bonds increased, due to a
smaller distance between the molecules (Chen & Dickinson, 2000).
Bayarri, Durán, and Costell (2004) reported an increase in G0 for kcarrageen
gels in the presence of sucrose, suggesting that the
presence of sugar increased and stabilized the number of junction
zones between the polymer chains. The dependence of G0 and G00 on
the frequency can be described by a power law-type equation. The
magnitude of k’ increased with increase in polyol concentration and
this increase could be attributed to an increase in viscoelasticity of
the gum/polyol system (Kim et al., 2006).