Effects of Jasmine Rice Flour, Glutinous Rice Flour, and Potato Flour on Gluten-Free Coffee Biscuit Quality

Abstract

ABSTRACT This study investigated the effects of jasmine rice flour, glutinous rice flour, and potato flour on the physical, sensory properties and consumer acceptance of biscuits. The biscuits were made using varying ratios of jasmine rice flour: glutinous rice flour: potato flour. The mixture design was used for 10 treatments. Increasing the ratio of glutinous rice flour while keeping the ratio of jasmine rice flour constant increased the biscuit hardness, crispness, lightness (L*), appearance, aroma, flavor, and overall acceptance by >70%. However, it tended to decrease the biscuits’ redness (a*) and yellowness (b*). The higher acceptance score of appearance and color was found in the ratios of 66.7:16.7:16.7 and 50:50:0. The higher acceptance score of hardness and crispiness was found in the ratios of 16.7:66.7:16.7 and 50:50:0. The ratios of 16.7:6.7:16.7, 16.7:16.7:66.7, 50:50:0 and 33.3:33.3:33.3 received high overall acceptance scores.