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For a sweetener to successfully replace sucrose in food formulations, studies must first be conducted to determine the concentrations of the sweeteners to be used and their equivalent sweetness compared with sucrose. After establishing the optimal concentration of each sweetener, it is necessary to determine which is more similar to sucrose. The objective of this study was to determine the equivalent amount of different sweeteners, necessary to promote the same degree of ideal sweetness in mixed fruit (marolo, sweet passion fruit and soursop) jam and to characterise the time-intensity profile and consumer acceptance. With respect to the mixed fruit jam containing 40% (w/w) of sucrose, sucralose presented the highest sweetening power, being 1033.59 times sweeter than sucrose, followed by sucralose/acesulfame-K/neotame 5:3:0.1 (982.80), sucralose/steviol glycoside 2:1 (862.67), sucralose/acesulfame-K 3:1 (847.45) and sucralose/thaumatin 1:0.6 (284.29). The sweeteners had a time-intensity sweetness profile similar to sucrose and a timeintensity bitterness profile different from sucrose but similar among themselves. In relation to sensory acceptance, a significant difference between the low-sugar jam and the traditional jam was not observed. Sweeteners in mixed fruit jam V. R. de Souza et al. Sucralose/ acesulfame-K/ neotame (5:3:0.1) 0.8434 0.6070 0.979 S = 6.9727C 0.6070 Figure 2 Time-intensity profile of mixed fruit jam samples of sucrose and each sweetener for sweetness (a) and bitterness (b).

Summary The objective of this study was to evaluate the influence of whey protein isolate (WPI) and inulin blends on the properties of rosemary essential oil microencapsulated by spray drying. The following ratios (w/w) of WPI to inulin were evaluated: 1:1, 1:3 and 3:1. Increasing the WPI concentration increased the particle instantanisation times and decreased the moisture content. The samples did not differ significantly (P > 0.05) in hygroscopicity and porosity. The microcapsules produced at higher inulin concentration showed the highest bulk density and tapped density and were significantly different from other treatments. WPI/inulin blends of 1:1 and 3:1 proved to be effective carriers to entrap rosemary essential oil. The encapsulated oil composition in particles proved to be quite similar to pure oil, and no interaction between wall matrix and encapsulated oil was demonstrated. The analysis of particle size distribution revealed that the particle size varied from 11.5 to 11.9 μm and that all samples had an amorphous structure.