The most commonly used microencapsulating agents are maltodextrin, gum arabic
or a combination of both. The addition of carrier agents into the feed solution influences the properties and stability of powder. The addition of high molecular weight additives to the product before atomizing is a widely used alternative that increases glass transition temperature.
Tonon et al reported the significant effect of inlet air temperature on the physicochemical properties of the spray-dried powder. The quality of reconstituted spray-dried powder is good because the product temperature is rarely elevated above 100 °C