Titre :	Phytochemical and biological studies of Scabiosa stellata.L (Caprifoliaceae) & Sedum carealeum. Vahl (Crassulaceae).
Type de document :	texte imprimé
Auteurs :	Naima Rahmouni, Auteur ; Nour-eddine Beghidja, Directeur de thèse
Editeur :	جامعة الإخوة منتوري قسنطينة
Année de publication :	2018
Importance :	224 f.
Format :	30 cm.
Note générale :	2 copies imprimées disponibles
Langues :	Anglais (eng)
Catégories :	Français - Anglais Chimie
Tags :	acides gras  GC-MS  LC-MS  profil phénolique  Scabiosa et Sedum  fatty acids  Scabiosa and Sedum  الأحماض الدھنیة  المحتوى الفینولي
Index. décimale :	540 Chimie et sciences connexes
Résumé :	his present work concerns the phytochemical and biological study of two Algerian plants Scabiosa stelatta.L and Sedum carealeum vahl. Chromatographic separations and purifications of these plants led to the isolation and identification of 18( S. stellata) and 3 compounds(S. carealeum). data.GC/MS analyses of hexane extract S. stellata allowed the identification of 43 metabolites belonging to several important families, fatty acids and their derivatives (87%) are the major ones, wherever 19 metabolites were identified and alkenes ( 60%) is the major family followed by 30% of fatty acids in hexane extract of second plant. S. stellata showed a good activity antioxidant with: DPPH, ABTS and Reducing Power tests. Compared with the other tested extracts, the n-butanol extract showed the highest activity. Using UHPLC-DAD-ESI/MSn, the knowledge of the S. stellata phenolic profile was successfully extended, for the first time establishing its content in important secondary metabolites, such as chlorogenic acids and flavonoids. Chlorogenic acids and flavonoids comprised more than 80% of the compounds found, which explains the recently reported antioxidant activity of this plant extract.
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/RAH7341.pdf
Format de la ressource électronique :	pdf
Permalink :	index.php?lvl=notice_display&id=10991

Phytochemical and biological studies of Scabiosa stellata.L (Caprifoliaceae) & Sedum carealeum. Vahl (Crassulaceae). [texte imprimé] / Naima Rahmouni, Auteur ; Nour-eddine Beghidja, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 224 f. ; 30 cm.
2 copies imprimées disponibles

Langues : Anglais (eng)

Catégories :	Français - Anglais Chimie
Tags :	acides gras  GC-MS  LC-MS  profil phénolique  Scabiosa et Sedum  fatty acids  Scabiosa and Sedum  الأحماض الدھنیة  المحتوى الفینولي
Index. décimale :	540 Chimie et sciences connexes
Résumé :	his present work concerns the phytochemical and biological study of two Algerian plants Scabiosa stelatta.L and Sedum carealeum vahl. Chromatographic separations and purifications of these plants led to the isolation and identification of 18( S. stellata) and 3 compounds(S. carealeum). data.GC/MS analyses of hexane extract S. stellata allowed the identification of 43 metabolites belonging to several important families, fatty acids and their derivatives (87%) are the major ones, wherever 19 metabolites were identified and alkenes ( 60%) is the major family followed by 30% of fatty acids in hexane extract of second plant. S. stellata showed a good activity antioxidant with: DPPH, ABTS and Reducing Power tests. Compared with the other tested extracts, the n-butanol extract showed the highest activity. Using UHPLC-DAD-ESI/MSn, the knowledge of the S. stellata phenolic profile was successfully extended, for the first time establishing its content in important secondary metabolites, such as chlorogenic acids and flavonoids. Chlorogenic acids and flavonoids comprised more than 80% of the compounds found, which explains the recently reported antioxidant activity of this plant extract.
Diplôme :	Doctorat en sciences
En ligne :	../theses/chimie/RAH7341.pdf
Format de la ressource électronique :	pdf
Permalink :	index.php?lvl=notice_display&id=10991