Mathematical Modeling of Moisture Sorption Isotherms and Determination of Isosteric Heats of Sorption of Ziziphus Leaves

Table 1

Selected salts used for preparing saturated salt solutions and their corresponding water activities.

Salt	Water activity
	30°C	40°C	50°C
KOH	0.0738	0.0626	0.0572
MgCl2	0.3238	0.3159	0.3054
K2CO3	0.4317	0.423	0.4091
NaNO3	0.7275	0.71	0.6904
KCl	0.8362	0.8232	0.812
BaCl2	0.898	0.891	0.8823