Abstract

The aim of this study was to assess physicochemical properties and sensory acceptance of snack bars (SBs) made with different levels of maize biomass flour (MBF), rice flakes (RF) and oat flakes (OF). A simplex design was used, with 6 mixtures and 2 repetitions. The different levels of MBF, RF and OF used in the SBs influenced all physicochemical properties evaluated (moisture, water activity, specific volume, hardness and instrumental color). SB4 (containing 14.85:5:10.85% of MBF:RF:OF, respectively) and SB6 (containing 14:8:8% of MBF:RF:OF, respectively) were the closest to the desirable formulation according to the desirability diagram for the physicochemical properties of the SBs. SB1 (containing 20:5:5% of MBF:RF:OF, respectively) was also selected for sensory analysis as it showed the highest MBF content among all formulations. None SBs presented a microbiological risk. The SB6 presented the highest sensory acceptance and purchase intent, highlighting its rich content of dietary fiber (16.45 ± 0.1 g/100 g) and protein (7.04 ± 0.02 g/100 g) besides its low-calorie characteristic (1421.22 kJ/100 g/339.68 kcal/100 g). The development of SBs using MBF is feasible in relation to their physicochemical and sensory properties, which can stimulate the sustainable production of new goods from this by-product.

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