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Journal of Biological Sciences
Year: 2008  |  Volume: 8  |  Issue: 4  |  Page No.: 779 - 783

Antioxidant Activity, Reducing Power and Total Phenolic Content of Iranian Olive Cultivar

M. Hajimahmoodi, N. Sadeghi, B. Jannat, M.R. Oveisi, S. Madani, M. Kiayi, M.R. Akrami and A.M. Ranjbar    

Abstract: Antioxidant activity of methanolic (50%) extracts of olive pulp (Olea europaea L.) was investigated. Total antioxidant activity, phenolic contents and reducing power in six Iranian olive cultivars were determined. The highest antioxidant activity (28.699 mmol FeII/100 g dry plant), total phenolic contents (2997 mg gallic acid/100 g dry plant) and reducing power (8.331 g Vitamin E/100 g dry plant) were detected in Mishen and the lowest in Conservalina. A linear positive relationship existed between the antioxidant activity, total phenolic compounds (r2 = 0.976) and reducing power of the tested olive pulp (r2 = 0.848). Iranian olives possess relatively high antioxidant activity due to contribution of phenolic compounds. The present study shows that Iranian olive cultivars are strong radical scavengers and can be considered as good sources of natural antioxidants for medicinal and commercial uses.

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