Based on the literature on laboratory biscuits, four hypotheses
can be formulated regarding the impact of fat and sugar reduction
on sweetness, fat perception and liking of commercial biscuits: (i)
Sugar-reduced biscuits are expected to be perceived as less sweet
than standard biscuits even at low reduction levels, whereas fat-reduced
biscuits are perceived as less fatty than standard biscuits at
higher reduction levels; (ii) for a similar level of reduction, sugarreduced
biscuits should be more disliked than fat-reduced biscuits;
(iii) it can be assumed that fat- and/or sugar-reduced biscuits
should be less liked than standard biscuits as soon as they are perceived
as less sweet and to a lesser extent as less sweet and less
fatty; (iv) these results should vary according to the categories of
biscuits. Thus, several categories of biscuits were studied.