Inulin is a storage carbohydrate composed by a chain of fructose molecules with a terminal glucose molecule, so that it can be classified as a fructooligosaccharide. This research work mainly intended to verify, by central composite experimental design, the effects of operational variables of spray drying process (inlet air temperature and concentration of inulin) on the process yield, moisture content and powder hygroscopicity, pH, water activity and lipid oxidation.