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Partager le résultat de cette recherche Interroger des sources externesEffet de diverses plantes médicinales et de leurs huiles essentielles sur la méthanogénèse ruminale chez l’ovin. / Karima Khenaka
Titre : Effet de diverses plantes médicinales et de leurs huiles essentielles sur la méthanogénèse ruminale chez l’ovin. Type de document : texte imprimé Auteurs : Karima Khenaka, Auteur ; Rabah Arhab, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 81 f. Format : 31 cm Note générale : Magister
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
BiologieTags : méthane plantes médicinales huiles essentielles rumen. Biologie Index. décimale : 570 Sciences de la vie. Biologie En ligne : ../theses/biologie/KHE5876.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=5687 Effet de diverses plantes médicinales et de leurs huiles essentielles sur la méthanogénèse ruminale chez l’ovin. [texte imprimé] / Karima Khenaka, Auteur ; Rabah Arhab, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 81 f. ; 31 cm.
Magister
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
BiologieTags : méthane plantes médicinales huiles essentielles rumen. Biologie Index. décimale : 570 Sciences de la vie. Biologie En ligne : ../theses/biologie/KHE5876.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=5687 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité KHE/5876 KHE/5876 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude des activités antioxydante et antifongique de l’huile essentielle des fleurs sèches de Lavandula officinalis sur les moisissures des légumes secs Type de document : texte imprimé Auteurs : Imène Laib, Auteur ; M Barkat, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 100 f. Format : 31 cm Note générale : Magister
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Huiles essentielles Lavandula officinalis Rendement CPG Activité antioxydante Activité
antifongique Humidité Moisissures Hydrodistillation.Index. décimale : 640 Industrie Alimentaire En ligne : ../theses/agronomie/LAI5965.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=5931 Etude des activités antioxydante et antifongique de l’huile essentielle des fleurs sèches de Lavandula officinalis sur les moisissures des légumes secs [texte imprimé] / Imène Laib, Auteur ; M Barkat, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 100 f. ; 31 cm.
Magister
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Huiles essentielles Lavandula officinalis Rendement CPG Activité antioxydante Activité
antifongique Humidité Moisissures Hydrodistillation.Index. décimale : 640 Industrie Alimentaire En ligne : ../theses/agronomie/LAI5965.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=5931 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité LAI/5965 LAI/5965 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude de l'activité antibacterienne des huiles infusées de quatre plantes medecinales connues comme aliments Type de document : texte imprimé Auteurs : Nairouz Benzeggouta ; Ammar Benguedouar, Directeur de thèse ; Univ. de Constantine, Éditeur scientifique Année de publication : 2005 Importance : 118 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
ChimieTags : Activité antibacterienne Huiles infusées Oignon Cannelle Clou de girofle Huiles essentielles Jus frais Aromathrapie Aromatogramme Concentration minimale inhibitrice Index. décimale : 540 Chimie et sciences connexes En ligne : ../theses/chimie/BEN4319.pdf Permalink : index.php?lvl=notice_display&id=3735 Etude de l'activité antibacterienne des huiles infusées de quatre plantes medecinales connues comme aliments [texte imprimé] / Nairouz Benzeggouta ; Ammar Benguedouar, Directeur de thèse ; Univ. de Constantine, Éditeur scientifique . - 2005 . - 118 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
ChimieTags : Activité antibacterienne Huiles infusées Oignon Cannelle Clou de girofle Huiles essentielles Jus frais Aromathrapie Aromatogramme Concentration minimale inhibitrice Index. décimale : 540 Chimie et sciences connexes En ligne : ../theses/chimie/BEN4319.pdf Permalink : index.php?lvl=notice_display&id=3735 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/4319 BEN/4319 Thèse Bibliothèque principale Thèses Disponible
Titre : Effets des antioxydants naturels issus de Pituranthos scoparius et Hibiscus sabdariffa sur la stabilité oxydative d’émulsions à base de lactosérum et la cristallisation des lipides. Type de document : texte imprimé Auteurs : Anis Chikhoune, Auteur ; Abdelghani Boudjellal, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2019 Importance : 323 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Technologies Alimentaires: Sciences Alimentaires extraits phénoliques bruts huiles essentielles Pituranthos scoparius Hibiscus sabdariffa émulsion lactosérum stabilité oxydative interactions protéine-polyphénols monoterpènes cristallisation crude phenolic extracts essential oils emulsion whey oxidative stability protein-polyphenol interactions monoterpenes crystallization مستخلصات فينولية خام زيوت أساسية مستحلب مصل اللبن الاستقرار التأكسدي تفاعلات البروتين-البوليفينول مونوتربين التبلور Index. décimale : 640 Industrie Alimentaire Résumé : Nowadays, antioxidants have a significant impact on both human health and food processing. This thesis sheds the light on the action of these antioxidants on the oxidative stability of a whey-based spread-type emulsion, but also the crystallization of fats in the fatty phase. The crude phenolic extracts of Pituranthos scoparius and Hibiscus sabdariffa and the essential oils of the aerial parts of P. scoparius were studied. These extracts were obtained via conventional extraction techniques (decoction and hydrodistillation) and non-conventional techniques (microwaves and ultrasounds). Spectrophotometric assays were performed for the assessment of the contents of total phenolics in the crude extracts studied. Various chromatographic
techniques have been performed for the characterization and identification of the different classes of antioxidants. The antioxidant activity was studied by the tests of reducing power and antiradical activity. Different emulsions were formulated at both laboratory and pilot scales, incorporated by the concentrated crude phenolic extracts of the plants and the essential oil from stems of P. scoparius at different concentrations. Their oxidative stability was evaluated by Rancimat test. The two phases of the emulsion have been studied regarding two aspects: whey protein-polyphenol interactions in the aqueous phase and lipid crystallization in the fatty phase containing palm, soybean and sunflower oils. A Tricine SDS-PAGE was performed in the former and a set of investigation techniques for the study of isothermal crystallization (DSC, p-NMR and PLM) in the latter were applied. The results of spectrophotometric, chromatographic and antioxidant activity corroborate with those of oxidative stability and showed a protective effect against lipid oxidation at low concentrations of plant crude extracts (100 and 300 ppm) and the essential oil of P. scoparius (100 ppm). The sensory evaluation of the spread at 100, 300 and 600 ppm of the essential oil of P. scoparius, with a principal component analysis (PCA), revealed the influence of some sensory attributes on the segregation of emulsions at these different concentrations. The interactions of caseins and β-Lactoglobulin with polyphenols in the aqueous phase, with the formation of characteristic dimers, were revealed by densitometry and LC-MS/MS analysis. The formation of these dimers did not affect in any case the oxidative stability of the emulsions tested. The study of the effect of essential oils of stems and flowers of P. scoparius on lipid crystallization (palm oil alone and a mixture of the oils) showed a change in isothermal crystallization behavior of triglycerides with a delay of crystallization, a decrease in calculated enthalpies of fusion, slower crystallization rates and a drastic decrease in solid fat contents (SFC). This modification is also noticeable and different shapes and sizes of triglyceride crystals (spherulites) were visualized for fats with essential oils compared to control ones. The induction of a dilution effect of the system by the essential oils is discarded and the hypothesis of the implication of major monoterpenes in disturbing the crystallization events (nucleation and crystal growth) is proposed. From this study, it can be concluded that the recovery and industrial exploitation of the two plants studied is strongly encouraged, especially for P. scoparius which is already exploited in the Algerian traditional pharmacopoeia and food preservation. In addition to the antioxidant effects reported for the essential oil, it is suggested the possibility of its use as a natural additive to modify fat crystallization for applications in shortenings and various food emulsions.
Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/CHI7488.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11320 Effets des antioxydants naturels issus de Pituranthos scoparius et Hibiscus sabdariffa sur la stabilité oxydative d’émulsions à base de lactosérum et la cristallisation des lipides. [texte imprimé] / Anis Chikhoune, Auteur ; Abdelghani Boudjellal, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2019 . - 323 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Technologies Alimentaires: Sciences Alimentaires extraits phénoliques bruts huiles essentielles Pituranthos scoparius Hibiscus sabdariffa émulsion lactosérum stabilité oxydative interactions protéine-polyphénols monoterpènes cristallisation crude phenolic extracts essential oils emulsion whey oxidative stability protein-polyphenol interactions monoterpenes crystallization مستخلصات فينولية خام زيوت أساسية مستحلب مصل اللبن الاستقرار التأكسدي تفاعلات البروتين-البوليفينول مونوتربين التبلور Index. décimale : 640 Industrie Alimentaire Résumé : Nowadays, antioxidants have a significant impact on both human health and food processing. This thesis sheds the light on the action of these antioxidants on the oxidative stability of a whey-based spread-type emulsion, but also the crystallization of fats in the fatty phase. The crude phenolic extracts of Pituranthos scoparius and Hibiscus sabdariffa and the essential oils of the aerial parts of P. scoparius were studied. These extracts were obtained via conventional extraction techniques (decoction and hydrodistillation) and non-conventional techniques (microwaves and ultrasounds). Spectrophotometric assays were performed for the assessment of the contents of total phenolics in the crude extracts studied. Various chromatographic
techniques have been performed for the characterization and identification of the different classes of antioxidants. The antioxidant activity was studied by the tests of reducing power and antiradical activity. Different emulsions were formulated at both laboratory and pilot scales, incorporated by the concentrated crude phenolic extracts of the plants and the essential oil from stems of P. scoparius at different concentrations. Their oxidative stability was evaluated by Rancimat test. The two phases of the emulsion have been studied regarding two aspects: whey protein-polyphenol interactions in the aqueous phase and lipid crystallization in the fatty phase containing palm, soybean and sunflower oils. A Tricine SDS-PAGE was performed in the former and a set of investigation techniques for the study of isothermal crystallization (DSC, p-NMR and PLM) in the latter were applied. The results of spectrophotometric, chromatographic and antioxidant activity corroborate with those of oxidative stability and showed a protective effect against lipid oxidation at low concentrations of plant crude extracts (100 and 300 ppm) and the essential oil of P. scoparius (100 ppm). The sensory evaluation of the spread at 100, 300 and 600 ppm of the essential oil of P. scoparius, with a principal component analysis (PCA), revealed the influence of some sensory attributes on the segregation of emulsions at these different concentrations. The interactions of caseins and β-Lactoglobulin with polyphenols in the aqueous phase, with the formation of characteristic dimers, were revealed by densitometry and LC-MS/MS analysis. The formation of these dimers did not affect in any case the oxidative stability of the emulsions tested. The study of the effect of essential oils of stems and flowers of P. scoparius on lipid crystallization (palm oil alone and a mixture of the oils) showed a change in isothermal crystallization behavior of triglycerides with a delay of crystallization, a decrease in calculated enthalpies of fusion, slower crystallization rates and a drastic decrease in solid fat contents (SFC). This modification is also noticeable and different shapes and sizes of triglyceride crystals (spherulites) were visualized for fats with essential oils compared to control ones. The induction of a dilution effect of the system by the essential oils is discarded and the hypothesis of the implication of major monoterpenes in disturbing the crystallization events (nucleation and crystal growth) is proposed. From this study, it can be concluded that the recovery and industrial exploitation of the two plants studied is strongly encouraged, especially for P. scoparius which is already exploited in the Algerian traditional pharmacopoeia and food preservation. In addition to the antioxidant effects reported for the essential oil, it is suggested the possibility of its use as a natural additive to modify fat crystallization for applications in shortenings and various food emulsions.
Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/CHI7488.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11320 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHI/7488 CHI/7488 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude chimique et biologique de plantes médicinales Algériennes : cas des Espèces Zizyphus lotus et Fagonia longispina. Type de document : texte imprimé Auteurs : Widad Ourzeddine, Auteur ; Samir Benayache, Directeur de thèse ; Fadila Benayache, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 232 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ChimieTags : Fagonia longispina Zizyphus lotus huiles essentielles séparations chromatographiques méthodes spectroscopiques analyse GC-FID et GC-MS activité antioxydante activité antibactérienne essential oil different chromatographic
methods GC-FID and GC-MS analysis spectrophotometers methods antioxidant activity الفصل الكروماتوغرافي طرق التحليل الطيفي الزيوت الأساسية التحليل GC-FIDوGC-MS- النشاط المضاد للأكسدة النشاط المضاد للبكتيرياIndex. décimale : 540 Chimie et sciences connexes Résumé : The present work is devoted to the phytochemical and biological study of an endemic species of the septentrional Sahara Fagonia longispina Batt. (Zygophyllaceae) and the chemical composition and antioxidant activity study of fruit essential oil of Zizyphus lotus (L.) Desf. (Rhamnaceae).
In a first part, the phytochemical investigation of the species F. longispina using different chromatographic methods (CC, TLC and HPLC) led to isolation and identification by different spectroscopic methods (1D and 2D, MS and UV) 18 compounds. Among these isolated compounds, a new monoterpene ∆-2-carene-6-ol-6-O-(2',6'-diacetyl)-β-D-glucopyranoside, together with four other monoterpenes, seven flavonoids, four phenolic derivatives and two
sterol.
Moreover, the in vitro free radical-scavenging activity of the all extracts has been investigated by DPPH test, which have demonstrated that ethyl acetate extract are good sources of antioxidant compounds. However, all extracts of F. longispina showed no substantial result compared to the antioxidant activity of ascorbic acid. In addition, the total phenolic and the flavonoids contents were measured using spectrophotometers methods, the results showed that the acetate extract has a high content compared to the other extracts. As for antibacterial activity study, showed that a high antibacterial effect of the ethyl acetate extract.
In a second part, the chemical composition of fruit essential oil Z. lotus has been investigated by the GC-FID and GC-MS analysis, which led to identified 38 compounds. Fatty acids represented the major fraction (saturated and unsaturated compounds 67.8 and 11%, respectively), followed by hydrocarbons (10.8%) and sesquiterpenes (1.1%).These results were quite different from those obtained previously on the fixed oil of the fruit of this species from two samples from Algeria.
The antioxidant property of this oil was evaluated using β-carotene bleaching method. The result indicated the potent antioxidant activity of essential oils from Z. lotus.Diplôme : Doctorat En ligne : ../theses/chimie/OUR7236.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10831 Etude chimique et biologique de plantes médicinales Algériennes : cas des Espèces Zizyphus lotus et Fagonia longispina. [texte imprimé] / Widad Ourzeddine, Auteur ; Samir Benayache, Directeur de thèse ; Fadila Benayache, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 232 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ChimieTags : Fagonia longispina Zizyphus lotus huiles essentielles séparations chromatographiques méthodes spectroscopiques analyse GC-FID et GC-MS activité antioxydante activité antibactérienne essential oil different chromatographic
methods GC-FID and GC-MS analysis spectrophotometers methods antioxidant activity الفصل الكروماتوغرافي طرق التحليل الطيفي الزيوت الأساسية التحليل GC-FIDوGC-MS- النشاط المضاد للأكسدة النشاط المضاد للبكتيرياIndex. décimale : 540 Chimie et sciences connexes Résumé : The present work is devoted to the phytochemical and biological study of an endemic species of the septentrional Sahara Fagonia longispina Batt. (Zygophyllaceae) and the chemical composition and antioxidant activity study of fruit essential oil of Zizyphus lotus (L.) Desf. (Rhamnaceae).
In a first part, the phytochemical investigation of the species F. longispina using different chromatographic methods (CC, TLC and HPLC) led to isolation and identification by different spectroscopic methods (1D and 2D, MS and UV) 18 compounds. Among these isolated compounds, a new monoterpene ∆-2-carene-6-ol-6-O-(2',6'-diacetyl)-β-D-glucopyranoside, together with four other monoterpenes, seven flavonoids, four phenolic derivatives and two
sterol.
Moreover, the in vitro free radical-scavenging activity of the all extracts has been investigated by DPPH test, which have demonstrated that ethyl acetate extract are good sources of antioxidant compounds. However, all extracts of F. longispina showed no substantial result compared to the antioxidant activity of ascorbic acid. In addition, the total phenolic and the flavonoids contents were measured using spectrophotometers methods, the results showed that the acetate extract has a high content compared to the other extracts. As for antibacterial activity study, showed that a high antibacterial effect of the ethyl acetate extract.
In a second part, the chemical composition of fruit essential oil Z. lotus has been investigated by the GC-FID and GC-MS analysis, which led to identified 38 compounds. Fatty acids represented the major fraction (saturated and unsaturated compounds 67.8 and 11%, respectively), followed by hydrocarbons (10.8%) and sesquiterpenes (1.1%).These results were quite different from those obtained previously on the fixed oil of the fruit of this species from two samples from Algeria.
The antioxidant property of this oil was evaluated using β-carotene bleaching method. The result indicated the potent antioxidant activity of essential oils from Z. lotus.Diplôme : Doctorat En ligne : ../theses/chimie/OUR7236.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10831 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité OUR/7236 OUR/7236 Thèse Bibliothèque principale Thèses Disponible
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