This finding may be associated with the sucrose’s ceasing to exert its delaying effects and the PD’s having a neutral effect on the protein denaturation temperature despite delaying starch gelatinisation.
The differences in heating pattern between the control and the SC-PD batters can be observed in Fig. 2, where tgd values versus temperature are plotted.
Throughout the temperature sweep, the increase in temperature reduced the values of tgd (values closer to 0), butwhile this decrease was gradual in the control batter, in the SC-PD batters, for sucrose replacement levels higher than 25%, an evident change in the slope of the curve associated with the start of starch gelatinisation or/and protein denaturation was observed. Another feature that can be observed in Fig. 2 is the decrease in the initial(T ¼ 25 C) viscoelasticity of the batter (tgd closer to 1) as the level of sucrose replacement increased. In a similar fashion to the flow property results, this lower viscoelasticity reveals a lower
complexity of the system structure as the sucrose was replaced by SC-PD.