Figures & data
Table 1 Water activity and corresponding equilibrium moisture content (EMC, g H2O/g of dry matter) and initial (Tgi ), mid (Tgm ), and end (Tge ) glass transition temperatures of fortified formula powder
Figure 1 Experimental and predicted sorption isotherm data of fortified formula powder.
Figure 2 Variation of glass transition temperature with solid content.
Table 2 BET and GAB model parameters of water adsorption isotherms of fortified formula powder at room temperature
Table 3 Comparing sorption isotherm and glass transition models using monolayer aw as the basis for stability
Figure 3 Variation of glass transition temperature with water activity and moisture content.
Figure 4 Loss of vitamin C in fortified formula stored at room temperature at different water activities.
Figure 5 Zero-order plot of vitamin C loss in fortified formula stored at room temperature at different water activities.
Figure 6 Vitamin C degradation in fortified formula stored at room temperature as affected by (a) water activity and (b) distance from glass transition temperature.
