Abstract
The creep behaviors for “Dangos, ” which were prepared with various particle sizes of nonglutinous rice powder and were stored at 0 and 25 °C for 1 and 24 h, were measured in the temperature range of 10 to 55 °C. The apparent activation energies, ΔHa, and fractional free volumes, f0, were calculated, then these parameters were compared with those obtained from glutinous one. The values of ΔHafor “Dangos” prepared with non-glutinous rice powders were smaller and the values of f0 were larger than those with glutinous rice powders with any particle size. “Dango” prepared with 150-200 mesh of non-glutinous rice powder possessed the maximal ΔHaand minimal f0, it was independent of storage temperature (0 °C, 25 °C) and stor-age time (1 h, 24 h), as same as glutinous one stored at 0 °C.
These results suggested that “Dango” prepared with coarse powder possessed the porous structure resulted in the presence of clump of particulated aggregates. While, “Dango” prepared with 150-200 mesh powder had a fine packed structure. The structure of “Dango” prepared with glutinous rice powders was finer than that with non-glutinous one.
