in a refrigerator so that
the water activity was equilibrated within the powder mass. In
case of higher humidities, such as 90% RH, the duration for conditioning
was increased to around 48 h for paprika powder. The
water activity of the powders were measured and then they were
oven dried for 24 h at 70 C in a Gallenkamp vacuum oven and the
moisture content was evaluated to construct the sorption