The Effects of Defatted Organic Red Jasmine Rice Bran Extract on Sun Protection Products

Abstract

The effects of defatted organic red jasmine rice bran extract (DRBE) on sun
protection properties were evaluated. Three formulations of sun protection products were
studied as followed; two formulations consisted of oil in water emulsion and another
formulation was gel emulsion and stability test was applied in all formulations. The results
showed that DRBE at 1 μg/mL had antioxidant activity of 91.64% and IC50 of 64.02 μg/mL.
The extract had the highest antioxidant stability of 88.12% when stored at 4o C.
Furthermore, the effects of DRBE on sun protection factor (SPF) was found to have an
effect on enhancing the sunscreen values on all three formulations, in which SPF values
increased from 2.86 to 4.39. The highest SPF value of 4.39 was obtained for gel emulsion.
Hence, the SPF values of these three formulations were claimed for medium protection
and water resistance properties for 2 hour maximum. The gel emulsion showed the lowest
reduction of SPF value at 0.08 and 0.2, respectively, after stored at room temperature for
30 and 60 days. These results demonstrated that DRBE boosted the SPF value and it can
be potentially used as SPF stabilizer.