Air temperature in the ovenwas set at 60 and
80 C. A single layer of blueberries was spread uniformly on a wire
mesh tray (0.2 m 0.2 m 0.02 m) suspended on a digital balance
(RADWAG, WPS 4000/C/2, Radom, Poland), accurate to ± 0.001 g,
and mounted at the top of the drying chamber