Sensory characterisation of gluten-free orange-flavoured cake with rice, sorghum, teff and yacon flours: flash profile and ComDim as study methods

This study aimed to optimise an orange flavour gluten-free cake formulation using rice flour, teff, sorghum and yacon. Nine cake formulations were initially submitted for acceptance and purchase intent tests with 66 assessors, where colour, odour, flavour, texture and overall acceptance were judged. After the result of the acceptance test and purchase intention, an optimised formulation (OP) was elaborated through the desirability function. This formulation was composed of 25% rice flour, 60% sorghum flour and 15% teff flour. After that, the sensory test of the Flash Profile was carried out to evaluate the consensus of the assessors about the optimised formulation, and for the 33 assessors of the Flash Profile test, with the method of analysis by Common Dimensions (ComDim), 92.29% described the F3 formulations (100% teff) and FO (optimised) are similar. This can be explained by the fact that the formulations have teff flour in their composition, while formulations F1 and F2 are made only with 100% rice flour and 100% sorghum flour, respectively. It was found that it is possible to use the flour under study to develop gluten-free cakes with orange flavour with good sensory acceptance.