Powder Morphology Development during Spray Drying

Abstract

Application behavior of spray dried powders such as reconstitution behaviorand flowability is indirectly influenced by powder particle morphology. Weinvestigated the influence of the drying conditions and composition for wheyprotein (WP), maltodextrin (MD) and their mixtures on particle morphologyduring pilot-scale spray drying. Even though all powders showed a variety ofmorphologies, MD powders contained more wrinkled particles and had highbulk density, whereas pure WP powders contained more hollow particles.Mixture powders (75:25 WP:MD) show more hollow particles with increasinginlet temperature, with a lower bulk density