| Titre : |
Caractérisation chimique des principes molluscicides des feuilles de Nerium oleander L. |
| Type de document : |
texte imprimé |
| Auteurs : |
Warda Boudraa (Née Trifa) ; Abdelmalik Belkhiri, Directeur de thèse ; Univ. de Constantine, Éditeur scientifique |
| Année de publication : |
2009 |
| Importance : |
109 f. |
| Note générale : |
01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD |
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Chimie
|
| Tags : |
Nerium oleander Apocynaceae Feuilles Cardiénolide mollscicide leaves molluscicidal cardenolide الدفلة أوراق Apocynaceaeآردينوليد ضد الرخويات |
| Index. décimale : |
540 Chimie et sciences connexes |
| Résumé : |
Molluscicidal screening of N. oleander leaf gradient extracts (20µg/ml) localized
strong activities in both diethyl ether (EE) and ethyl acetate (AE) crude extracts.
Ethyl acetate extract fractioning leads to three cardenolides glycosides. One of
which, hereafter named as W4, contains a digitoxigenine aglycone with disaccharides
attached to carbone 3. A potent molluscicidal activity is revealed after exposing snails
for 24 hours to cardenolide W4. Lethal concentrations DL50 et DL90 were found to be,
respectively equal to 3,35 ± 1,19 et 19,13 ± 10,67. Molluscicidal activity of
cardenolide W4, towards snails of Bulinus truncatus species, vector in growth cycle of
urogenital Bilharzia parasites, is reported by this study for the first time. In the expand
of time used (24 hours), the study showed also an inverse relationship between
exposing time and lethal concentration of cardenolide W4. This indicates that lethal
concentration may be minimized with expanding time of snails exposing to the tested
cardenolide W4. |
| Diplôme : |
Magistère |
| En ligne : |
../theses/chimie/BOU5429.pdf |
| Permalink : |
index.php?lvl=notice_display&id=3802 |
Caractérisation chimique des principes molluscicides des feuilles de Nerium oleander L. [texte imprimé] / Warda Boudraa (Née Trifa) ; Abdelmalik Belkhiri, Directeur de thèse ; Univ. de Constantine, Éditeur scientifique . - 2009 . - 109 f. 01 Disponible à la salle de recherche 02 Disponibles au magazin de la B.U.C. 01 CD Langues : Français ( fre)
| Catégories : |
Français - Anglais
Chimie
|
| Tags : |
Nerium oleander Apocynaceae Feuilles Cardiénolide mollscicide leaves molluscicidal cardenolide الدفلة أوراق Apocynaceaeآردينوليد ضد الرخويات |
| Index. décimale : |
540 Chimie et sciences connexes |
| Résumé : |
Molluscicidal screening of N. oleander leaf gradient extracts (20µg/ml) localized
strong activities in both diethyl ether (EE) and ethyl acetate (AE) crude extracts.
Ethyl acetate extract fractioning leads to three cardenolides glycosides. One of
which, hereafter named as W4, contains a digitoxigenine aglycone with disaccharides
attached to carbone 3. A potent molluscicidal activity is revealed after exposing snails
for 24 hours to cardenolide W4. Lethal concentrations DL50 et DL90 were found to be,
respectively equal to 3,35 ± 1,19 et 19,13 ± 10,67. Molluscicidal activity of
cardenolide W4, towards snails of Bulinus truncatus species, vector in growth cycle of
urogenital Bilharzia parasites, is reported by this study for the first time. In the expand
of time used (24 hours), the study showed also an inverse relationship between
exposing time and lethal concentration of cardenolide W4. This indicates that lethal
concentration may be minimized with expanding time of snails exposing to the tested
cardenolide W4. |
| Diplôme : |
Magistère |
| En ligne : |
../theses/chimie/BOU5429.pdf |
| Permalink : |
index.php?lvl=notice_display&id=3802 |
|
Caractérisation chimique des principes molluscicides des feuilles de Nerium oleander L.
