老化団子のみかけの活性化エネルギーと自由体積分率 (第2報) : 0℃および25℃貯蔵団子に及ぼす粳米粉粒度の影響と米粉種類 (糯, 粳) の比較

概要

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The creep behaviors for "Dangos," which were prepared with various particle sizes of non-glutinous rice powder and were stored at 0 and 25℃ for 1 and 24h, were measured in the temperature range of 10 to 55℃. The apparent activation energies, ΔH_a, and fractional free volumes, f_0, were calculated, then these parameters were compared with those obtained from glutinous one. The values of ΔH_a for "Dangos" prepared with non-glutinous rice powders were smaller and the values of f_0 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 ΔH_a and minimal f_0 ,it was independent of storage temperature (0℃, 25℃) and storage time (1h, 24h), as same as glutinous one stored at 0℃. 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.
社団法人日本家政学会の論文
1995-05-15