Effect of fine grinding of millfeeds on whole-wheat flour pasting properties
As shown in Table 3, straight-grade flours (SG) and whole-wheat flour (WWF) with original millfeeds from both wheat classes had significantly higher peak viscosity (PV), trough, and final viscosity (FV) than each group of WWFs with fine-ground millfeeds (P < 0.05). Within the fine-ground WWF groups, the values of these three parameters declined with the number of fine grinding treatment, and the biggest reduction of these parameters was achieved in the 1st fine-ground WWF group. In addition, the 4th fine-ground WWF groups from HRS and HRW showed significantly lower values in these pasting viscosities than the 1st fine-ground WWF groups, which corresponded to the significant reduction of WWF particle median diameters (Table 1). As for the values of breakdown and setback, there was no clear trend shown for both HRS and HRW with the decrease of millfeed particle sizes. The peak time of HRS WWF revealed slight decrease with WWF particle sizes.