The pressure in the drying chamber was controlled at 12 and
101 kPa (atmospheric pressure) by a pressure-control valve after
setting the carrot in the fluidized bed. A certain amount of time
(less than 30 s) was needed to set the carrot in place and adjust the
pressure in the drying chamber. Thus, the start of the drying process
was defined as the time at which the vacuum pump was
turned on after setting the carrot in the drying chamber.