Drying vacuum impregnated fruits may cause undesirable
changes. In particularly, fruits containing sugar required special
drying methods to decrease the water content. For high-quality
products, it is essential to avoid drying methods with high temperatures
and long drying times. Freeze drying (FD) is considered as
a process that preserves quality characteristics; however it is a
time-consuming process that requires high energy. In contrast air
drying (AD) is a low cost procedure; however quality parameters
such as flavor, color, nutrients, bulk density and rehydration capacity
may be negatively affected