Some available approaches to reduce the stickiness problem include
process based (such as use of low outlet temperature and low humidity
air) and material science based (use of high molecular weight carriers)
methods. The high molecular weight carrier agents normally used
in spray drying of fruit juices include maltodextrin and gum arabic
mainly because of their high solubility and low viscosity change in the
feed material, which are important for the spray drying process.
Proteins also can minimize the stickiness problem by modifying the
surface properties of the atomized droplets/particles. The surface active
property of proteins (preferential migration to air/water interface)with
their film forming ability upon drying can overcome the stickiness of
fruit juices during spray drying at low addition rates.