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dc.contributor.authorTadrent ép Laouadi, Wafa
dc.contributor.authorKabouche, Zahia
dc.date.accessioned2019-01-23T11:56:05Z
dc.date.available2019-01-23T11:56:05Z
dc.date.issued2018-10-25
dc.identifier.urihttp://hdl.handle.net/123456789/136512
dc.description.abstractThe present work concerns the phytochemical and biological studies of areal parts of two Algerian plants belonging to the Asteraceae family: Cotula anthemoides L. and Pentzia monodiana Maire. This study led to the isolation and identification of fifteen compounds of Cotula anthemoides and eight compounds of Pentzia monodiana including five phenolic acids, nine flavonoids from which one is new, three lignans, one sesquiterpene lactone, two glycosyl phenolics, a glycosyl acid, a diterpene and an nucleoside. The structural determination of the isolated compounds was established by the use of 1D and 2D NMR spectroscopic techniques (1H, 13C, COSY, HSQC, HMBC and ROESY), by mass spectrometry (ESI-MS and HRESI-MS) and by comparison with the literature data. The evaluation of the antioxidant activity by 4 methods (DPPH, ABTS, CUPRAC and chelating by ferrous ions) of the various extracts, showed a good activity of extracts from P. monodiana compared to those of C. anthemoides. Furthermore, extracts of C. anthemoides showed an interesting anticholinesterase activity. However, both of lignanes, flavonol and flavones substituted in C-3, exhibited better antityrosinase and antiradical activities than some flavones only.fr_FR
dc.language.isofrfr_FR
dc.publisherجامعة الإخوة منتوري قسنطينةfr_FR
dc.subjectCotula anthemoides L,fr_FR
dc.subjectPentzia monodiana Mairefr_FR
dc.subjectAsteraceaefr_FR
dc.subjectlignanesfr_FR
dc.subjectflavonoïdesfr_FR
dc.subjectsesquiterpènes lactonesfr_FR
dc.subjectactivité antioxydantefr_FR
dc.subjectactivité anticholinesterasefr_FR
dc.subjectactivité antityrosinasefr_FR
dc.subjectsesquiterpenes lactonesfr_FR
dc.subjectantioxidant activityfr_FR
dc.subjectanticholinesterase activityfr_FR
dc.subjectantityrosinase activityfr_FR
dc.subjectلافونيداتfr_FR
dc.subjectضد الأكسدةfr_FR
dc.subjectضد الكولينسترازfr_FR
dc.subjectضد التيروزينازfr_FR
dc.titleComposants et potentiel biologique de Cotula anthemoides L et Pentzia monodiana MAIRE. (Asteraceae).fr_FR
dc.typeThesisfr_FR


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