الفعالية المضادة للأكسدة لبعض المستخلصات النباتية ذات المحتوى الفينولي
Abstract
The phenolic constituents gallic acid,and the antioxidant activity for six local plants extracts, Pyrus malus ,Juglans regia, Zizyphus jujubae, Tamarix mannifera, Neriun oleander and Punica granatun were determined . The phenolic compounds were extracted by two methods,boiled water and 50% methanol.The results reveald that there were no apparent diffrences between the mentioned extraction methods. The leaves of Pyrus malus were the most studied extractants containing gallic acid with the concentration of (0.677 and 0.559)mg/ml in the water and alcoholic extracts, respectively . The antioxidant activity were the highest in the methanolic extract of Punica granatun peels and Juglans regia leaves with(IC50)of100and250μg/ml,respectively.
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