Adsorption and desorption indicators estimated for the Oswin’s model of EMC for
whole milk powder are shown in Table 3. The following Table 4 shows fitted values of
EMC, according to the Oswin’s model, for corresponding RH values and temperatures
measured. Moisture sorption isotherm for adsorption and desorption of the whole milk
powder based on the Oswin’s model at temperatures 5 °C and 35 °C are presented in Figs.
1 and 2, respectively. The influence of temperature on the course of MSI, based on Oswin’s
model for water adsorption is shown in Fig. 3. The critical values for the EMC of the
samples tested, corresponding to an aw value of 0.6 (Beuchat 1981), were calculated for
temperatures measured as presented in Table 5.