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Journal of Biological Sciences

Year: 2010 | Volume: 10 | Issue: 4 | Page No.: 316-324
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Authors

W. Rached

H. Benamar

M. Bennaceur

A. Marouf

Keywords

Research Article

Screening of the Antioxidant Potential of Some Algerian Indigenous Plants

W. Rached, H. Benamar, M. Bennaceur and A. Marouf
In order to gain more knowledge about local medicinal plants, fifty two plants harvested in different regions of Algeria were screened for their antioxidant potential by means of two complementary assays, namely inhibition of DPPH radical and β-carotene bleaching and compared with authentic antioxidants, with respect of their total content of phenolic compounds and flavonoids. The seasonal variation of the antioxidant activity was also studied on Tetraclinis articulata grown in natural habitat, in order to determine the best time for harvesting this plant. Plant antioxidant activity showed best correlation with both phenolics and flavonoids contents. The flavonoids are the most important antioxidant agents as the correlation shown between these two parameters. Phytochemical screening showed a wide variety in the phytoconstituents profiles of the plants studied with phenolics predominance. Antioxidant activity assays showed that some extracts are very active comparatively with an authentic and common substance like BHA, synthetic antioxidant widely used in agro-alimentary industry. These extracts may be potential sources for isolation of natural antioxidants.
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