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dc.contributor.authorGouizi, Rania-
dc.contributor.authorShoutri, Elabbas-
dc.date.accessioned2020-12-14T18:39:01Z-
dc.date.available2020-12-14T18:39:01Z-
dc.date.issued2020-09-
dc.identifier.urihttp://di.univ-blida.dz:8080/jspui/handle/123456789/7396-
dc.description36 p., ill., cd-rom, 30 cmfr_FR
dc.description.sponsorshipThe antioxidant are the subject of many works because, in addition to their usage as conservatives in the foodstuffs by replacing synthesis antioxidants, they intervene in the treatment of many diseases. Within the framework of discovering a new antioxidants from natural sources,we attempted to extract the polyphenols from the Cupressus sempervirens L. leaves using different solvents (distilled water, methanol, Aceton and Ethanol), then estimate the total polyphenols from the prepared extracts using Folin-Ciocalteu reagent. The results of total polyphenols estimation revealed the richness of this plant in secondary metabolites, particularly in polyphenols, and that the aqueous extract and the methanolic extract are the richest in total polyphenols, where the best yield was obtained by the methanolic extract (20.4%) followed by the acetone extract (14.96%) and the ethanolic extract (11.48%). Therefore, C. sempervirens L. leaf extract can be used as a natural antioxidant in food, pharmaceutical and cosmetic industries where synthetic antioxidants presently pose a great public health problem.fr_FR
dc.language.isoenfr_FR
dc.subjectCupressus sempervirens L.fr_FR
dc.subjectleaf extractsfr_FR
dc.subjectSecondary metabolitefr_FR
dc.subjectantioxidant activityfr_FR
dc.titleEvaluation of the antioxidant activity of leaves extracts of green cypress (Cupressus sempervirens L.)fr_FR
dc.typeThesisfr_FR
Collection(s) :Mémoires de Master

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