Antioxidant Activity of Flavonoid Extract From Olea europaea L. Leaves

Flavonoids of Olea europaea L. leaves (collected from Al-Askari region, Center of Nassirya city) have been extracted, then number of preliminary qualitative chemical tests were carried out on the extract such as Thin Layer Chromatography (TLC). The results revealed that the extract consist of three flavonoide compounds (A, B C). Compound (A) has been isolated from O. europaea L. leaves by column chromatography using CHCl3: Acetic acid (5:2) solvent as eluent. In an attempt to assess the possible antioxidant activity for flavonoide compound (A), three assays were conducted. It was found that flavonoid extract possesses strong antioxidant activity (83.2%), strong reducing power (increases as the extract concentration increases) and exhibited ferrous ion chelating capability.