Abstract
In this study we investigate the antioxidant, anti-inflammatory, and antidiabetic activities of ethanolic leaf extracts of three selected varieties of Phoenyx dactylifera L. namely: “Ghars”, “Deglet Nour” and “Hamraya”. The assessment of the antioxidant potential of crude leaf extracts, using superoxide anions inhibition, radical scavenging activity and total antioxidant activity essays, was carried out. Furthermore, the anti-inflammatory properties of the extracts were determined by measuring the inhibition of nitric oxide (NO) production. Moreover, the antidiabetic effect was evaluated by inhibition of α-amylase and α-glucosidase enzymes. The total phenolic content measured by Folin-ciocalteu method. The raw leaf extracts of the selected varieties were found to contain a high content of total phenolic content (342.45 mg GAE/ gDW for GE) and therefore exhibited a higher antioxidant activity and inhibitory effect of radicals scavenging activity against DPPH and superoxide anion (IC 50 =7.44 μg / mL and 39.11 μg / mL respectively). Keywords: Phoenyx dactyliferaL; antioxidant; anti-inflammatory; antidiabetic activities.
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