Materials and methods
2.1. Experimental design
To assess the effects of aspartame, aw, and humectant
used to depress aw, on: (a) the chemical stability of KS and
aspartame, (b) the development of non-enzymatic; (c)
overall intensity, sourness and sweetness perception, the
experiment was arranged in a design that included the use
of three levels of aspartame (0.000, 0.050 and 0.500 g/100 g
of system) and three levels of aw (1.000, 0.989 and 0.971).
For the aw level of 0.989, two kinds of solutes were used as
humectants (glucose and xylitol). Effects on the chemical
stability of additives and on the development of nonenzymatic
browning were analyzed at 10 time intervals
throughout storage at 35 1C. The evaluation of overall
intensity, sourness and sweetness perception was performed
only at time zero for safety reasons.
Materials and methods2.1. Experimental designTo assess the effects of aspartame, aw, and humectantused to depress aw, on: (a) the chemical stability of KS andaspartame, (b) the development of non-enzymatic; (c)overall intensity, sourness and sweetness perception, theexperiment was arranged in a design that included the useof three levels of aspartame (0.000, 0.050 and 0.500 g/100 gof system) and three levels of aw (1.000, 0.989 and 0.971).For the aw level of 0.989, two kinds of solutes were used ashumectants (glucose and xylitol). Effects on the chemicalstability of additives and on the development of nonenzymaticbrowning were analyzed at 10 time intervalsthroughout storage at 35 1C. The evaluation of overallintensity, sourness and sweetness perception was performedonly at time zero for safety reasons.
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