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Partager le résultat de cette recherche Interroger des sources externesCaractérisation et comparaison du contenu polyphénolique de deux plantes médicinales (Thym et Sauge) et la mise en évidence de leurs activités biologiques / Aicha Madi
Titre : Caractérisation et comparaison du contenu polyphénolique de deux plantes médicinales (Thym et Sauge) et la mise en évidence de leurs activités biologiques Type de document : texte imprimé Auteurs : Aicha Madi, Auteur ; Université Mentouri, Editeur scientifique ; R Merghem, Directeur de thèse Année de publication : 2009 Importance : 106 f. Note générale : 01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD Langues : Français (fre) Catégories : Français - Anglais
BiologieTags : Flavonoides Activité antibactérienne Thymus serpyllum Thymus algeriensis Salvia officinalis Activités antioxydantes
flavonoids antioxidant activity antibacterial activityIndex. décimale : 570 Sciences de la vie. Biologie Résumé : The medicinal plants represent an immense source of bioactive molecules, endowed with numerous biological activities. The present work concerns of photochemistry study of flavonoids isolated from Thymus serpyllum, Thymus algeriensis, and Salvia officinalis, and an evaluation of their antioxidant and antibacterial activities.
The rate of total phenols ranged from 16, 64 to 25,47 mg GAE / g extract, whereas the rate of flavonoids is 1,7 to 2,4 mg QE/ g extract. The antioxidant activity is seems very important, whose the results vary from 88% to 92% for T. algeriensis, 81% to 92% for T .serpyllum, and 87% to 92% for S. officinalis.
The results of antibacterial activity showed that luteolin and its derivatives have significant inhibitory effect against the bacterial species tested.Diplôme : Magistère En ligne : ../theses/biologie/MAD5582.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=1818 Caractérisation et comparaison du contenu polyphénolique de deux plantes médicinales (Thym et Sauge) et la mise en évidence de leurs activités biologiques [texte imprimé] / Aicha Madi, Auteur ; Université Mentouri, Editeur scientifique ; R Merghem, Directeur de thèse . - 2009 . - 106 f.
01 Disponible à la salle de recherche 01 Disponible au magazin de la B.U.C. 01 CD
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Flavonoides Activité antibactérienne Thymus serpyllum Thymus algeriensis Salvia officinalis Activités antioxydantes
flavonoids antioxidant activity antibacterial activityIndex. décimale : 570 Sciences de la vie. Biologie Résumé : The medicinal plants represent an immense source of bioactive molecules, endowed with numerous biological activities. The present work concerns of photochemistry study of flavonoids isolated from Thymus serpyllum, Thymus algeriensis, and Salvia officinalis, and an evaluation of their antioxidant and antibacterial activities.
The rate of total phenols ranged from 16, 64 to 25,47 mg GAE / g extract, whereas the rate of flavonoids is 1,7 to 2,4 mg QE/ g extract. The antioxidant activity is seems very important, whose the results vary from 88% to 92% for T. algeriensis, 81% to 92% for T .serpyllum, and 87% to 92% for S. officinalis.
The results of antibacterial activity showed that luteolin and its derivatives have significant inhibitory effect against the bacterial species tested.Diplôme : Magistère En ligne : ../theses/biologie/MAD5582.pdf Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=1818 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MAD/5582 MAD/5582 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude morphologique, biochimique, physiologique et biologique de quelques populations de Teucrium polium L. Capitatum dans l’Est algérien Type de document : texte imprimé Auteurs : Samira Malki, Auteur ; A Yahia, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 186 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
BiologieTags : Teucrium polium L. Capitatum Lamiaceae trichome électrophorèse CLHP polyphenols activité antioxydante activité antibactérienne effet diurétique trichomes electrophoresis HPLC antioxidant activity antibacterial activity diuretic effect ??????? ??????? ??????? ?????
????????? ??????? ??????? ??????? ??????? ??????? ????????? ??? ????? ?????Index. décimale : 570 Sciences de la vie. Biologie Résumé : The purpose of our work has focused on the study of Teucrium polium L. Capitatum, which is a widespread medicinal plant in algerian steppes. Several study topics were investigated such as the morphology, physio-biochemical constituents and biological effects.
The morphological analysis consisted of ten populations sampled at different habitats in eastern Algeria. This study revealed that the leaves have the lowest number (five out of ten) of types of trichomes, followed by the calyx and corolla with eight types for each. This confirms the absence of intraspecific variability within the study populations. Furthermore, the analysis of relationships between morphological characteristics and environmental factors of their habitat showed that the latter influences the length of trichomes.
The use of one-dimensional electrophoresis technique on polyacrylamide gel in the presence of detergent (SDS-PAGE) allowed to determine the total protein profiles of the ten study populations. The similarity coefficients of polypeptide bands indicated high similarity between populations.
Biochemical analyzes of the three phenotypes of T. polium L. Capitatum showed that extracts of purple phenotypes were richest in anthocyanins, soluble sugars and carotenoids compared with pink and white phenotypes enlightening there by the importance of flower color.
The combination of certain chemical analysis methods, spectrophotometry (UV-visible) and chromatographic (HPLC) have identified three flavonoids including mostly the cyanidin and two other flavonoids, quercetin and caffeic acid.
The evaluation of the antioxidant potency, that was conducted using the method of trapping the free radical DPPH and that of iron reduction FRAP, revealed that the extract of Biskra population showed higher reducing capacity compared to that of Sétif, with a strong trapping of DPPH● radicals.
As regards to the antibacterial activity, it appears that extracts from two populations have acceptable antibacterial properties.
The pharmacological effect of T. polium L. Capitatum showed an interesting diuretic property.
Diplôme : Doctorat en sciences En ligne : ../theses/biologie/MAL6998.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10396 Etude morphologique, biochimique, physiologique et biologique de quelques populations de Teucrium polium L. Capitatum dans l’Est algérien [texte imprimé] / Samira Malki, Auteur ; A Yahia, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2017 . - 186 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : Teucrium polium L. Capitatum Lamiaceae trichome électrophorèse CLHP polyphenols activité antioxydante activité antibactérienne effet diurétique trichomes electrophoresis HPLC antioxidant activity antibacterial activity diuretic effect ??????? ??????? ??????? ?????
????????? ??????? ??????? ??????? ??????? ??????? ????????? ??? ????? ?????Index. décimale : 570 Sciences de la vie. Biologie Résumé : The purpose of our work has focused on the study of Teucrium polium L. Capitatum, which is a widespread medicinal plant in algerian steppes. Several study topics were investigated such as the morphology, physio-biochemical constituents and biological effects.
The morphological analysis consisted of ten populations sampled at different habitats in eastern Algeria. This study revealed that the leaves have the lowest number (five out of ten) of types of trichomes, followed by the calyx and corolla with eight types for each. This confirms the absence of intraspecific variability within the study populations. Furthermore, the analysis of relationships between morphological characteristics and environmental factors of their habitat showed that the latter influences the length of trichomes.
The use of one-dimensional electrophoresis technique on polyacrylamide gel in the presence of detergent (SDS-PAGE) allowed to determine the total protein profiles of the ten study populations. The similarity coefficients of polypeptide bands indicated high similarity between populations.
Biochemical analyzes of the three phenotypes of T. polium L. Capitatum showed that extracts of purple phenotypes were richest in anthocyanins, soluble sugars and carotenoids compared with pink and white phenotypes enlightening there by the importance of flower color.
The combination of certain chemical analysis methods, spectrophotometry (UV-visible) and chromatographic (HPLC) have identified three flavonoids including mostly the cyanidin and two other flavonoids, quercetin and caffeic acid.
The evaluation of the antioxidant potency, that was conducted using the method of trapping the free radical DPPH and that of iron reduction FRAP, revealed that the extract of Biskra population showed higher reducing capacity compared to that of Sétif, with a strong trapping of DPPH● radicals.
As regards to the antibacterial activity, it appears that extracts from two populations have acceptable antibacterial properties.
The pharmacological effect of T. polium L. Capitatum showed an interesting diuretic property.
Diplôme : Doctorat en sciences En ligne : ../theses/biologie/MAL6998.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10396 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité MAL/6998 MAL/6998 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude phytochimique et biologique de Bituminaria bituminosa(L.)C.H.Stirton (Fabaceae) et Centaaurea dimorphaViv. (Asteraceae) Type de document : texte imprimé Auteurs : Salima Azzouzi ep Ouchtati, Auteur ; Kamel Medjroubi, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2016 Importance : 135 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Fabaceae Asteracea Bituminaria bituminosa Centaurea dimorpha antioxydante activité antibactérienne antioxidant antibacterial activity ??????? ????????? ??????? ??????? ????? ??????? ?????? ????? ????????? Index. décimale : 540 Chimie et sciences connexes Résumé : Our research includes the stady of the phytochemical and biological aspects of the two presented species Bituminaria bituminosa(L.) C.H.Stirton. which belongs to Fabaceae family and Centaurea dimorpha Viv. which belongs to Asteraceae family.
Several chromatographic methods were used in our work. Thes methods allowed us to isolate four products from B.bituminosa plant (only three have been identified), and five products from C.dimorpha plant (only four have been identified).
The identification of structures has been realised by combining the different spectrometric and spectroscopic methods (SMES, UV, RMN-1D,2D).
Butanolic extract of B.bituminosa species showed a weak antioxidant capacity. The various extracts of the two studied plants have shown a good antibacterial activity.Diplôme : Doctorat en sciences En ligne : ../theses/chimie/AZZ6871.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10185 Etude phytochimique et biologique de Bituminaria bituminosa(L.)C.H.Stirton (Fabaceae) et Centaaurea dimorphaViv. (Asteraceae) [texte imprimé] / Salima Azzouzi ep Ouchtati, Auteur ; Kamel Medjroubi, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2016 . - 135 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Fabaceae Asteracea Bituminaria bituminosa Centaurea dimorpha antioxydante activité antibactérienne antioxidant antibacterial activity ??????? ????????? ??????? ??????? ????? ??????? ?????? ????? ????????? Index. décimale : 540 Chimie et sciences connexes Résumé : Our research includes the stady of the phytochemical and biological aspects of the two presented species Bituminaria bituminosa(L.) C.H.Stirton. which belongs to Fabaceae family and Centaurea dimorpha Viv. which belongs to Asteraceae family.
Several chromatographic methods were used in our work. Thes methods allowed us to isolate four products from B.bituminosa plant (only three have been identified), and five products from C.dimorpha plant (only four have been identified).
The identification of structures has been realised by combining the different spectrometric and spectroscopic methods (SMES, UV, RMN-1D,2D).
Butanolic extract of B.bituminosa species showed a weak antioxidant capacity. The various extracts of the two studied plants have shown a good antibacterial activity.Diplôme : Doctorat en sciences En ligne : ../theses/chimie/AZZ6871.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10185 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité AZZ/6871 AZZ/6871 Thèse Bibliothèque principale Thèses Disponible
Titre : Étude phytochimique et évaluation des activités antioxydante, antibactérienne et cytotoxique de deux plantes du genre Phagnalon (Asteraceae) Type de document : texte imprimé Auteurs : Hanene Cherchar ép Saadi, Auteur ; Djemaa Berrehal, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 190 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Asteraceae Phagnalon saxatile Phagnalon sordidum activité antioxydante activité antibactérienne cytotoxicité antioxidant activity antibacterial activity cytotoxicity ?????? ????? ??????? ?????? ????? ????????? ?????? ??????? Index. décimale : 540 Chimie et sciences connexes Résumé : Our phytochemical and biological works concerned the aerial parts of two species belonging to Asteraeae family : Phagnalon saxatile (L) Cass. and Phagnalon sordidum L.
Several chromatographic methods allowed us to isolate ten products from the n-butanol and ethyl acetate extracts of Phagnalon saxatile from which one is new, and twenty one products from Phagnalon sordidum.
Structures were determined by different spectral methods: nuclear magnetic resonance with different applications (NMR 1H, NMR 13C, COSY, HSQC and HMBC), the mass spectrometry, UV, acid hydrolysis as well as comparison with literature data.
4 methods were used to evaluate the antioxidant activity of Phagnalon sordidum and Phagnalon saxatile. The latter showed a good activity by the use of 4 methods: DPPH, ABTS, CUPRAC and superoxide radical scavenging activity by alkaline DMSO whereas Phagnalon sordidum exhibited a moderate activity with DPPH and CUPRAC tests.
Furthermore, petroleum ether and chloroform extracts from Phagnalon saxatile showed moderate antibacterial activity against the tested strains. The isolated products (1-O- β-D-glucopyranosyl-1,4-dihydroxy-2-((E) 2-oxo-3-butenyl) benzene, 1-O-β-glucopyranosyl- 2(3’,3’-diméthylallyl) hydroquinone and Potassium 4-hydroxy-3-methoxybenzoique acide
methyl ester-5-sulfate) from Phagnalon saxatile showed a moderate cytotoxic activity by the use of MTT method.
Diplôme : Doctorat En ligne : ../theses/chimie/CHE7249.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10841 Étude phytochimique et évaluation des activités antioxydante, antibactérienne et cytotoxique de deux plantes du genre Phagnalon (Asteraceae) [texte imprimé] / Hanene Cherchar ép Saadi, Auteur ; Djemaa Berrehal, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2018 . - 190 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Asteraceae Phagnalon saxatile Phagnalon sordidum activité antioxydante activité antibactérienne cytotoxicité antioxidant activity antibacterial activity cytotoxicity ?????? ????? ??????? ?????? ????? ????????? ?????? ??????? Index. décimale : 540 Chimie et sciences connexes Résumé : Our phytochemical and biological works concerned the aerial parts of two species belonging to Asteraeae family : Phagnalon saxatile (L) Cass. and Phagnalon sordidum L.
Several chromatographic methods allowed us to isolate ten products from the n-butanol and ethyl acetate extracts of Phagnalon saxatile from which one is new, and twenty one products from Phagnalon sordidum.
Structures were determined by different spectral methods: nuclear magnetic resonance with different applications (NMR 1H, NMR 13C, COSY, HSQC and HMBC), the mass spectrometry, UV, acid hydrolysis as well as comparison with literature data.
4 methods were used to evaluate the antioxidant activity of Phagnalon sordidum and Phagnalon saxatile. The latter showed a good activity by the use of 4 methods: DPPH, ABTS, CUPRAC and superoxide radical scavenging activity by alkaline DMSO whereas Phagnalon sordidum exhibited a moderate activity with DPPH and CUPRAC tests.
Furthermore, petroleum ether and chloroform extracts from Phagnalon saxatile showed moderate antibacterial activity against the tested strains. The isolated products (1-O- β-D-glucopyranosyl-1,4-dihydroxy-2-((E) 2-oxo-3-butenyl) benzene, 1-O-β-glucopyranosyl- 2(3’,3’-diméthylallyl) hydroquinone and Potassium 4-hydroxy-3-methoxybenzoique acide
methyl ester-5-sulfate) from Phagnalon saxatile showed a moderate cytotoxic activity by the use of MTT method.
Diplôme : Doctorat En ligne : ../theses/chimie/CHE7249.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10841 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHE/7249 CHE/7249 Thèse Bibliothèque principale Thèses Disponible
Titre : Isolement et determination structurale de metabolites secondaires de plantes sahariennes : activites biologiques Type de document : texte imprimé Auteurs : Chahrazed Esseid èp Rezka, Auteur ; Fadila Benayache, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 341 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Pituranthos battandieri Maire Apiaceae Coumarines flavonoïdes Huile essentielle Activité antioxydante Activité antibactérienne Coumarins flavonoïds Essential oil Antioxidant activity Antibacterial Activity ??????? ????????? ????? ?????? ???????? ??????? ????????? Index. décimale : 540 Chimie et sciences connexes Résumé : The present work consisted on a phytochemical and biological study of the species Pituranthos battandieri Maire, Algerian variety from the Apiaceae family, endemic to the Algerian and Moroccan Sahara. To the best of our knowledge this species has never been studied before. This reason and the endemism of this rare species encouraged us to undertake this work in which we also reported the chemical composition of the essential oil of its aerial parts performed by GC and GC/MS analyses.
Our experimentation allowed the separation and purification of 23 compounds through the use of various chromatographic techniques (CCM, CC). All these structures have been elucidated by the combination of spectroscopic methods mainly:
(UV-Vis), 1D NMR (1H, 13C, DEPT), and 2D NMR (COSY, HSQC, HMBC, NOESY), We also used high resolution mass spectrometry methods (HR-EI-MS and HR-ESI-MS) and comparison with literature data. Among the isolated compounds, 13 coumarins from which 5 were new, 4 flavonoids, 2 steroids, 3 phenolic compounds
and 1 reduced sugar.
In addition, a biological valorization consisting in the evaluation of the antioxidant activity was carried out on the n-BuOH extract of the aerial parts of Pituranthos battandieri Maire. This study showed that this species has a biological efficiency. In this study we also carried out an antibacterial assay against some pathogenic organisms, the microbiological results showed that this butanolic extract did not show antibacterial activity.
The GC-FID and GC/MS analyses of the essential oil of Pituranthos battandieri Maire showed that this oil is mainly composed of myrcene (8.9%), α- phellandrene (17.5%), α-terpinene (14%), o-cymene (11.6%), β-phellandrene (3.5%), cis-linalol oxide (furanide) (5.9%) and trans-β-caryophyllene (3.4%).
Diplôme : Doctorat En ligne : ../theses/chimie/ESS7233.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10803 Isolement et determination structurale de metabolites secondaires de plantes sahariennes : activites biologiques [texte imprimé] / Chahrazed Esseid èp Rezka, Auteur ; Fadila Benayache, Directeur de thèse . - [S.l.] : جامعة الإخوة منتوري قسنطينة, 2018 . - 341 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Pituranthos battandieri Maire Apiaceae Coumarines flavonoïdes Huile essentielle Activité antioxydante Activité antibactérienne Coumarins flavonoïds Essential oil Antioxidant activity Antibacterial Activity ??????? ????????? ????? ?????? ???????? ??????? ????????? Index. décimale : 540 Chimie et sciences connexes Résumé : The present work consisted on a phytochemical and biological study of the species Pituranthos battandieri Maire, Algerian variety from the Apiaceae family, endemic to the Algerian and Moroccan Sahara. To the best of our knowledge this species has never been studied before. This reason and the endemism of this rare species encouraged us to undertake this work in which we also reported the chemical composition of the essential oil of its aerial parts performed by GC and GC/MS analyses.
Our experimentation allowed the separation and purification of 23 compounds through the use of various chromatographic techniques (CCM, CC). All these structures have been elucidated by the combination of spectroscopic methods mainly:
(UV-Vis), 1D NMR (1H, 13C, DEPT), and 2D NMR (COSY, HSQC, HMBC, NOESY), We also used high resolution mass spectrometry methods (HR-EI-MS and HR-ESI-MS) and comparison with literature data. Among the isolated compounds, 13 coumarins from which 5 were new, 4 flavonoids, 2 steroids, 3 phenolic compounds
and 1 reduced sugar.
In addition, a biological valorization consisting in the evaluation of the antioxidant activity was carried out on the n-BuOH extract of the aerial parts of Pituranthos battandieri Maire. This study showed that this species has a biological efficiency. In this study we also carried out an antibacterial assay against some pathogenic organisms, the microbiological results showed that this butanolic extract did not show antibacterial activity.
The GC-FID and GC/MS analyses of the essential oil of Pituranthos battandieri Maire showed that this oil is mainly composed of myrcene (8.9%), α- phellandrene (17.5%), α-terpinene (14%), o-cymene (11.6%), β-phellandrene (3.5%), cis-linalol oxide (furanide) (5.9%) and trans-β-caryophyllene (3.4%).
Diplôme : Doctorat En ligne : ../theses/chimie/ESS7233.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10803 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ESS/7233 ESS/7233 Thèse Bibliothèque principale Thèses Disponible
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