International Journal of Biological and Agricultural Research

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Browsing International Journal of Biological and Agricultural Research by Author "BENKHERARA, Salah"

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    Biofungicide Activity of Datura stramonium Leaf Extract Against Phytopathogenic Fungi
    (University of Eloued جامعة الوادي, 2019-06-16) DJAHRA, Ali Boutlelis; BENKADDOUR, Mounia; ZEGHIB, Khaoula; BENKHERARA, Salah; SHAIEB, Inas; GHANIA, Ahmed; BDIDA, Soumaia
    The aim of this study is determination of polyphenol contents and biofungicide activity of crude extract of Datura stramonium. The results of extraction showed an important yield percentage of crud extract equal 25.22 % wherase, the polyphenol content of the extract was 657,0 (mg AGE/ml Ext). The In vitro biofungicide activity carried out by disk diffusion method, the biofungicide effect results performed with crude extract and Milraz WP 76 fungicide (Propineb 70%, Cymoxanil 6%) against fungal strains. The results appear that natural substances possess an antifungal power on the multiresistant germs responsible for infectious diseases for plants. Growth inhibition varies depending on the fungal strains and the concentration of the test product
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    Evaluation of total phenolic contents and antioxidant potentials of ten medicinal plants from Algerian Sahara
    (University of Eloued جامعة الوادي, 2018-12-01) DJAHRA, Ali Boutlelis; BENKADDOUR, Mounia; ZEGHIB, khaoula; BENKHERARA, Salah; OUALABI, Katrenada; GHANIA, Ahmed; JDIDI, Khaoula
    In the context of discovery a new antioxidants from natural sources. We are interested in this work to study the phenolic compounds and the antioxidant activities of aerial part extracts for ten (10) medicinal plants, from Wilaya of El-Oued (South-east Algeria) : Bassia muricata, Traganum nudatum, Haloxylon scoparium, Cornulaca monacantha, Malcolmia aegyptiaca, Retama raetam, Heliathemum lipii, Zygophyllum album, Ephedra alata, Moltkia ciliate . The results obtained demonstrated that phytochemical screening of aerial part extracts for ten plants studied varies from one plant species to another. The richness of Hiliantimum lippii and Retama raetam in polyphenols whose content varies between 134.67 and 133.33 mg AGE/g Ext respectively. For other plants, the polyphenol content is between 31.02 and 58.33 mg AGE/g Ext. The antioxidant activity tests by using the DPPH method show that all the extracts of the plants studied have antioxidant properties lower than ascorbic acid (IC50 = 16.25 μg / ml) of which the species Hiliantimum lippii represents the best capacity (IC50=27.79μg/ml). The low power is recorded in the species Haloxylon scoparium (IC50 = 793.29 μg / ml)