JFAS_Vol 04 N 02

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Browsing JFAS_Vol 04 N 02 by Author "Lanez, T."

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    Chemical Composition And Antioxidant Activity Of Apis Mellifera Bee Pollen From Northwest Algeria
    (University of Eloued جامعة الوادي, 2012-07-01) Rebiai, A.; Lanez, T.
    The aim of this study was to assess the nutritional compositionand antioxidant activity of bee pollen produced in the North western region of Algeria.The content of total phenolic compounds,flavonoids, and antioxidant activity using the molybdate ion reductionmethod were determined. The meancontents of phenolic compounds and total flavonoids were 30.46 ± 8.22 mgof GAE.g–1 pollen and 8.92 ± 5.5 mg of RE.g–1 pollen, respectively. Highantioxidant activities were found for the molybdate ion reductionmethod, with values that ranged from 71.95 to 101.5μg of GAE.g–1 pollen. The bee pollen ofBoufarikshowed high antioxidant activity probably due to the high contentof phenolic compounds present in pollen.
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    Corrosion Inhibition Of Carbon Steel Xc70 In H2so4 Solution By Ferrocenederivative3- (ferrocenylmethylamine) benzonitrile
    (University of Eloued جامعة الوادي, 2012-07-01) Zaiz, T.; Lanez, T.
    In this work, we studied the efficiency of corrosion inhibition of carbon steel XC70 in H2SO4 0.5 M aqueous solution using ferrocenyl derivativessynthesized in our laboratory, this compound is: 3-(ferrocenylmethylamine)benzonitrile. The inhibitory potential of this compound was determined by electrochemical techniques based on Tafel segments. The results show that the studied compound has an efficiency of inhibition which depends on its concentration.The adsorption of these compounds on the surface of the metal is a chemical adsorption. The inhibition of corrosion reached 84 % at a concentration of 50 ppm.
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    Study Of Antioxidant Capacity Of Different Parts Of Two South Algerian Eggplant Cultivars
    (University of Eloued جامعة الوادي, 2012-07-01) Boubekri, C.; Rebiai, A.; Lanez, T.
    In this study the antioxidant capacity of ethanolic EE and water WE extracts fromdifferent parts (calyx, peel, and pulp) of eggplant (Solanum melongena L) were evaluated using cyclic voltammetry.The antioxidant capacity of different parts of eggplant was measured using ascorbic acid equivalent antioxidant capacity assays. The peel extracts of both dark purple and white samples showed the highest antioxidant capacity (66.78and 75.62 mg/g) followed by pulp (16.54 and 30.56 mg/g), and calyx (14.82 and 21.27 mg/g). These results indicate that antioxidant capacity of eggplant varied by parts and solvents.