Browsing by Author "D. Dib"

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    DETERMINATION OF PHENOLIC COMPOUNDS AND ANTIOXIDANT ACTIVITY OF WHITE HENBANE (HYOSCYAMUS ALBUS L.) PLANT TREATED BY KINETIN (K)AND 2,4-DICHLOROPHENOXYACETIC ACID (2,4-D) IN MILA, ALGERIA
    (Journal of Fundamental and Applied Sciences, 2018-09-01) Kenza Kadi; D. Dib; S. Hamli; D. Addad
    The present work deals with the evaluation of the antioxidant activity of the extracts of the white henbane (Hyoscyamus albus L.) of the solanaceae family, treated with phytohormones 2,4-Dichlorophenoxyacetic acid (2, 4-D) andKinetin (K)in doses 0, 10,20mg / l), widely used in traditional medicine and very rich in alkaloids. Preliminary phytochemical screening showed that treatment with phytohormones had no effect on the quality of the secondary metabolites. The results of the phytochemical study of the plant showed that the treatment with 2,4-D and K had a significant effect by reduction compared to the untreated plant on the phenolic compounds studied. The evaluation of the antioxidant activity in vitro was investigated by the DPPH trapping method and showed that the treatment with 2,4-D and K had a significant effect on the antioxidant activity so all the extracts of the various treatments of H. albus can act as radical scavengers.
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    EVALUATION OF THE ANTICOAGULANT ACTIVITY OF MARGINS FROM OLIVES EXTRACTION IN THE KHENCHELA REGION
    (Journal of Fundamental and Applied Sciences, 2020) Kenza Kadi; S. Hamli; D. Dib; D. Addad
    The objective of this study is the evaluation of the anticoagulant activity of polyphenols obtained from olive extracts (Olea europaea L.) Of the margines of two varieties cultivated at Khenchela (East of Algeria) , the first one is souidi from Chacher and the second one is chemlal from Baghai. The physicochemical characteristics of the two varieties studied showed a difference in water content, total solid content (dry matter), total solid in suspension, potential hydrogen, and especially its content in polyphenols and flavonoids. The quantitative analysis of the two extracts has revealed a great richness of the margines of the souidi variety of polyphenols and flavonoids content compared to the margines of the chemlal variety. The dosage of polyphenols is 0.8 mg EAG / mlE) for Souidi and (0.5 mgEAG / mlE) for Chemlal. The in vitro evaluation of the anticoagulant activity of the margines of two varieties souidi and chemlal revealed that the margines of the souidi variety has a good anticoagulant activity vis-à-vis the endogenous pathway Time of Céphaline Kaolin (TCK).
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    IDENTIFICATION OF HYDROGEOCHEMICAL PROCESSES IN A NORTH EASTERN ENDOREIC BASIN UNDER SEMI-ARID CONDITIONS (ALGERIA)
    (Journal of Fundamental and Applied Sciences, 2017) Kenza Kadi; D. Dib
    Statistical and geochemical methods were used to identify the factors influencing the behavior of groundwater in the Tarf watershed, characterized by a high water deficit. The chemical facies deduced from the piper diagram and the correlations between different major cations and anions evoked a dominance of the evaporite minerals with respect to the carbonates which are saturated and precipitated. Besides the projection of the results of a few points followed over a period of 4 years (2011-1015) on the Gibbs plot demonstrates the dominance of the processes of evaporation - precipitation with respect to the erosion which is very slowed during the last years due to the fact of lack of effective precipitation.