Osmotic dehydration is an efficient method of
drying because it is carried out at ambient temperature
and pressure therefore saving energy and money. The
high level of solute in osmotically treated products
decreases water activity and preserves them and thus
energy intensive drying process is avoided. At lower
water activity, reduced chemical reaction and the growth
of toxin producing micro organisms in the food are low.
There are numerous studies on osmotic dehydration of
vegetables. Studies on root vegetables are comparatively
less. Voluminous literature regarding osmotic
dehydration of fruits and vegetables is available.