Encapsulation Process of Propolis Extract by Casein Micelle Improves Sunscreen Activity

Propolis, a wax bee glue, have antioxidant activity and effective as broad spectrum UVB and UVA photop rotection sunscreens agent. To improve photoprotection activi ty n sunscreen cream, the propolis was encapsulate d by casein micelle. The Indonesian propolis was extracted by e thanol and separated the wax by freeze precipitatio n. The extract was encapsulated by casein and reduced their size b y ball mill homogenizer with the encapsulation effi ciency about 80% and size of particles about 80 nm. The particle s was applied in sunscreen cream, evaluate their st abillity and photoprotection activity Sun Protection Factor (SPF ) spectrophotometer (Optometric 290s). The results shows that the selected creams were stable and have moderate photo protection activities higher than the controls. The encapsulation process of propolis by casein micelle can improve t heir photoprotection activity.