The impact of dough hydration level and particle size distribution of the rice flour on the gluten free
bread quality and in vitro starch hydrolysis was studied. Rice flour was fractionated in fine and coarse
parts and mixed with different amounts of water (70%, 90% and 110% hydration levels) and the rest of
ingredients used for making gluten free bread. A larger bread specific volume was obtained when coarser
fraction and great dough hydration (90–110%) were combined. The crumb texture improved when
increasing dough hydration, although that effect was more pronounced when breads were obtained from
a fine fraction. The estimated glycaemic index was higher in breads with higher hydration (90–110%).
Slowly digestible starch (SDS) and resistant starch (RS) increased in the coarse flour breads. The coarse
fraction complemented with a great dough hydration (90–110%) was the most suitable combination
for developing rice bread when considering the bread volume and crumb texture. However, the lowest
dough hydration limited starch gelatinization and hindered the in vitro starch digestibility