Antioxidant Properties of Some Plants Extracts Used As Natural Sunscreen in the Formulated Cream

Abstract

The aim of the present research is to study the antioxidant properties of eight seeds [carrot, Moringa oleifera, soya bean,
coconut, Cucurbita maxima (Ccm), palm walnut (Pmw), Vigna unguiculata called niebe and Citrullus lanatus (Ctl)] extracts
using radical DPPH as model in view of their possible application as antisolar agents. Ethyl acetate seed extracts were
prepared with methanol as solvent and the absorbance were recorded after reaction with the radical DPPH using UV-vis
spectrophotometer. The EC50, the antiradical power (ARP) and the stoechiometry of eight seeds extracts were determinated. It
was noticed that three of the tested herbal extracts namely carrot, Pmw and niebe showed some antioxidant properties. The
carrot extracts gave the better results with an EC50, an ARP and a stoechiometry of 1.12, 0.89 and 0.45 respectively. Five
seeds extracts (Ccm, moringa, Ctl, coconut and soya) didn't show antioxidant properties. Thus, the carrot extracts are most
active whereas five samples did not show reactivity towards radical DPPH.