Spray drying of an oil-in-water emulsion containing vitamin D3: a synergy between formulation and process conditions to obtain microparticles.

Spray drying is a practical solution to convert oil-in-water emulsion into solid microparticles. In this work, a formulation study was conducted to identify the best composition of vitamin D3-loaded oil-in-water emulsion to process via a lab-scale spray dryer. The emulsion was composed of vitamin D3 oily solution (7 % w/w) and maltodextrin (21 % w/w), arabic gum (9 % w/w) and pea protein hydrolysate (1 % w/w) aqueous solution and was characterized by optimal stability (> 24 h).