Drying Kinetics and Effectiveness of Button Mushrooms (Agaricus bisporus) at Different Conditions of Sublimation Process

Abstract The drying process in the vacuum chamber included a fresh and pre-frozen button mushrooms. During the process, the pressure and the weight of the sample were recorded as well as the temperatures: inside the vacuum chamber, at the surface of the mushroom and in the center. The kinetics of the measured parameters are presented and their interdependence is shown The drying process under sublimation conditions for the pre-frozen mushroom was the shortest. This was an unexpected result, as the unfrozen mushroom it required less energy for water evaporation. The sublimation conditions of the pre-frozen mushrooms showed the best quality.