The flours from pigmented and glutinous rice have a great potential to increase the nutritional quality of gluten-free breads. The characteristics of whole-meal fine flours, slurries, doughs, and breads prepared from black, red, and white glutinous rice were, therefore, compared with commercially used refined fine and semi-coarse white rice flours. The pasting properties of different flours were strongly influenced by the type of rice they were made from. Slurries with red and glutinous flours exhibited a shift to a lower pasting temperature T0, lower values of ηPeak and ηFinal, as well as higher values of the breakdown and setback region than the slurries with refined flours. The slurry with black flour exhibited high values of viscosity η0 and breakdown, together with low values of ηFinal, setback region and total setback. Bread characteristics were strongly correlated with the pasting properties. The presence of bran particles did not negatively impact loaf volume, crumb hardness, springiness, and chewiness. Some defects were observed in glutinous and red rice bread. Fine flour exhibited better baking performance than semi-coarse flour. Glutinous flour has the potential to become an ingredient in gluten-free baking. The applicability of various black and red rice flours may be limited by the flavor and the taste.
The effect of instant rice mash (IRC) addition to rice bread was evaluated. Six samples containing different amounts of IRC (0, 10, 20, 30, 40, and 50%) were added to rice dough. Quality parameters (baking loss, specific volume, and textural properties) were evaluated. Texture properties were analysed in fresh bread and in bread after 24 h of storage. Additions of 10% and 20% of IRC increased baking loss from 15% to 22%, and the specific volume of rice bread from 1.5 mL g<sup>–1</sup> to 2.1 mL g<sup>–1</sup> (10% of IRC) and 1.9 mL g<sup>–1</sup> (20% of IRC). Increasing additions of IRC significantly decreased the hardness and chewiness of both fresh bread and bread stored for 24 h. By adding IRC, the cohesiveness of rice bread was increased. These findings are useful for increasing the quality of rice bread by adding IRC to rice dough.
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