PHYSICO-CHEMICAL CHARACTERIZATION OF THE ANTIOXIDANT MIXTURE RESVERATROL-FERULIC ACID FOR APPLICATIONS IN DERMATO-COSMETIC PRODUCTS

Abstract

The aim of the paper was to identify the best combination of resveratrol-ferulic acid with the purpose of increasing the antioxidant activity and maintaining the qualities of resveratrol in the management of skin disorders. Aqueous solutions of resveratrol (1%, 3% and 5% concentrations) and hydro alcoholic solution (30%) of ferulic acid were used. The following resveratrol-ferulic acid mixtures (v/v) were considered: 1:1; 1:2; 1:3 and 1:4. The antioxidant activity of the mixtures was determined and compared with that of resveratrol, and also the physico-chemical were performed by thermogravimetric analyses and UV-VIS spectrophotometry. The results underline that the mixtures of 1% and 3% resveratrol with 0.5% ferulic acid in a ratio of 1:1 and 1:2 ensure the improvement of the antioxidant activity of resveratrol.