*5.3. Spray Drying*

Spray drying is a method of forming a liquid essential oil into a powdery form. First, the essential oils are mixed in a solution containing wall materials such as maltodextrin, modified starch, gum, and the combination. Adding emulsifiers and homogenising agents is required to obtain smaller oil globules. Subsequently, the well-mixed solution is sprayed into hot air under high pressure, creating a mist that spreads in the drying chamber [119]. This results in a physical guard of the core matrix that protects the viability of essential oil during processing, storage, and transport [120].
