Microencapsulation of Mentha spicata essential oil by spray drying: Optimization, characterization, release kinetics of essential oil from microcapsules in food models

The aim of this study was to optimize microencapsulation conditions of spearmint essential oil (SEO) by spray drying, using a blend of inulin and gum Arabic as wall material. The oil retention, encapsulation efficacy, hygroscopicity, and carvone content were investigated with respect to three variables, including total solid content (x1), oil concentration (x2) and inlet air temperature (x3) via response surface methodology (RSM). The optimal...