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Nutrition, Alimentation et Technologies Agro-Alimentaires
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Accumulation de triglycerides par la levure oleagineuse Yarrowia Lipolytica / Doria Naila Bouchedja (Née Benzeghda)
Titre : Accumulation de triglycerides par la levure oleagineuse Yarrowia Lipolytica : maitrise et suivi des processus biologiques Type de document : texte imprimé Auteurs : Doria Naila Bouchedja (Née Benzeghda), Auteur ; Abdelghani Boudjellal, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2017 Importance : 136 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Yarrowia lipolytica Accumulation lipidique Assimilation lipidique Croissance microbienne Dimorphisme cellulaire Cytométrie en flux en ligne Métabolisme lipidique levure oléagineuse Lipid accumulation Lipid assimilation Microbial growth Cell dimorphism On-line flow cytometry Lipid metabolism Oleaginous yeasts تخزين الدهون استيعاب الدهون والنمو الميكروبي إزدواج
المرفلوجيا الخلوية السيتومترية استقلاب الدهون الخميرة الزيتيةIndex. décimale : 636 Sciences Vétérinaires Résumé : The objective of the present thesis deals mainly with the study of the incorporation
and the accumulation of lipids by the fatty yeast Yarrowia lipolytica seen in different aspects.
The work was emphasized through the following aspects: growth and lipid accumulation of
cultured yeast in four different media types, effect of pH on the foaming phenomenon of the
culture medium in the bioreactor, effect of culture parameters on the different phenomena
occurring during a culture of the studied microorganism, through the development of an original
technique consisting of an in-line coupling between bioreactors and a flow cytometer. The latter
allowed the on-line and continuous monitoring of the effect of crop parameters and finally the
investigation of cell growth and lipid incorporation in three genetically modified strains of Y.
lipolytica. The study revealed that yeast had the ability to grow and accumulate lipids from very
different culture media, including those consisting of industrial by-products. However, the rates
of growth, incorporation and lipid accumulation differed according to the strain involved. The
technique of in-line cytometry has shed light on the effect of aeration and pH on cellular growth
phenomena of lipid accumulation and dimorphism in Y.lipolytica. High oxygenation had an
accelerating effect on growth and metabolization of accumulated lipids, while a critical pH level
had a downright inhibitory effect. The transition from mycelial to non-mycelial round was also
influenced by oxygen and pH. The modulation of the latter has proven to be effective in
controlling the foaming phenomenon in bioreactors. Therefore, by modifying the pH values, it
was possible to neutralize the foam without affecting the microorganism.Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/BOU7149.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10454 Accumulation de triglycerides par la levure oleagineuse Yarrowia Lipolytica : maitrise et suivi des processus biologiques [texte imprimé] / Doria Naila Bouchedja (Née Benzeghda), Auteur ; Abdelghani Boudjellal, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2017 . - 136 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Yarrowia lipolytica Accumulation lipidique Assimilation lipidique Croissance microbienne Dimorphisme cellulaire Cytométrie en flux en ligne Métabolisme lipidique levure oléagineuse Lipid accumulation Lipid assimilation Microbial growth Cell dimorphism On-line flow cytometry Lipid metabolism Oleaginous yeasts تخزين الدهون استيعاب الدهون والنمو الميكروبي إزدواج
المرفلوجيا الخلوية السيتومترية استقلاب الدهون الخميرة الزيتيةIndex. décimale : 636 Sciences Vétérinaires Résumé : The objective of the present thesis deals mainly with the study of the incorporation
and the accumulation of lipids by the fatty yeast Yarrowia lipolytica seen in different aspects.
The work was emphasized through the following aspects: growth and lipid accumulation of
cultured yeast in four different media types, effect of pH on the foaming phenomenon of the
culture medium in the bioreactor, effect of culture parameters on the different phenomena
occurring during a culture of the studied microorganism, through the development of an original
technique consisting of an in-line coupling between bioreactors and a flow cytometer. The latter
allowed the on-line and continuous monitoring of the effect of crop parameters and finally the
investigation of cell growth and lipid incorporation in three genetically modified strains of Y.
lipolytica. The study revealed that yeast had the ability to grow and accumulate lipids from very
different culture media, including those consisting of industrial by-products. However, the rates
of growth, incorporation and lipid accumulation differed according to the strain involved. The
technique of in-line cytometry has shed light on the effect of aeration and pH on cellular growth
phenomena of lipid accumulation and dimorphism in Y.lipolytica. High oxygenation had an
accelerating effect on growth and metabolization of accumulated lipids, while a critical pH level
had a downright inhibitory effect. The transition from mycelial to non-mycelial round was also
influenced by oxygen and pH. The modulation of the latter has proven to be effective in
controlling the foaming phenomenon in bioreactors. Therefore, by modifying the pH values, it
was possible to neutralize the foam without affecting the microorganism.Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/BOU7149.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10454 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/7149 BOU/7149 Thèse Bibliothèque principale Thèses Disponible
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SER/6091 SER/6091 Thèse Bibliothèque principale Thèses Disponible
Titre : Alimentation, activité physique et composition corporelle d’une population d’étudiants algériens. Type de document : texte imprimé Auteurs : Ibrahim Sersar, Auteur ; Corinne Colette Mekhancha-Dahel, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2019 Importance : 181 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Nutrition Humaine: Sciences Alimentaires Activité physique Alimentation Composition corporelle Association Etudiants Algérie Physical activity Food Body composition Students Algeria النشاط البدني الغذاء تكوين الجسم العلاقات الطلاب الجزائر Index. décimale : 640 Industrie Alimentaire Résumé : The health status of young people has repercussions on the continuation of their studies and on their adult life. They were described as a population which is characterized by a high frequency of behavior said at risk. Few studies on this subject have been carried out in Algeria, and more specifically on the student population. The aim of this thesis is to describe the relationship between physical activity and the diet of Algerian students with their corpulence. An epidemiological survey was conducted at the University of Brothers Mentouri Constantine 1 in 2015 on a representative sample of 1061 students (63.9 % female), aged 23.3 ± 2.5 years. The data was collected using a survey form (general characteristics, physical activity questionnaire, physical activity journal, usual frequency of food consumption and 24-hours food recall). Anthropometric measurements and body composition were realised: weight, waist, waist circumference (WC), hip circumference (HC), brachial circumference, skin folds (adipomètre), fat mass and fat-free mass (impedancemetry). Systolic and diastolic arterial pressures were also measured. Epi-Info version 3.5.3 and STATA Version 11.0 software were used for data processing. The materiality threshold used was 0.05. Our results showed that the average body mass index (BMI) of the students was 22.4 ± 3.0 kg/m2 (86.9 % were overweight and 13.1 % obese). The sports students represented 26.4 %. Students who walked less than 30 minutes were 4 times more likely to be overweight with a significant difference of 95 % and those being seated longer than 4 hours was 2 times more. Sleep accounted for 36.5 % of the time of a typical day followed by non-sedentary activities (10.9 %). A significant and negative correlation was found between mean physical activity level (PAL=1.51 ± 0.1) and BMI, body fat percentage and WC. Students spent on average 2200.9 ± 404.4 kcal/day with a difference in favor of women (p=0.0030). The average total energy intake of the students was 1993.1 ± 599.6 kcal/day (732.9 kcal/day - 4318.4 kcal/day) with 26.1 % for fat, 13.9 % for protein and 60.0% for carbohydrates. The frequency of consumption of fatty and sugary products was predominant in obese subjects (p<0.05). Significant correlations were found between PAL and the frequency of consumption of fatty and sugary products; energy and nutritional intake; BMI, %FAT and WC. The more the contributions in energy and nutritional increased, the more the corpulence of the students increased. It appears from this study that there is a relationship between physical activity, diet, and algerian student body built. It is desirable to encourage this population to practise walking during their free time, the use of university sports facilities, consume more fruits and vegetables and have a better sleep. Sedentary solicitation must be minimized in daily activities. Information, prevention and promotion actions on the benefits of physical activity and healthy diet must be put in place at national level.
Note de contenu : Annexes.
Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/SER7478.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11310 Alimentation, activité physique et composition corporelle d’une population d’étudiants algériens. [texte imprimé] / Ibrahim Sersar, Auteur ; Corinne Colette Mekhancha-Dahel, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2019 . - 181 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Nutrition Humaine: Sciences Alimentaires Activité physique Alimentation Composition corporelle Association Etudiants Algérie Physical activity Food Body composition Students Algeria النشاط البدني الغذاء تكوين الجسم العلاقات الطلاب الجزائر Index. décimale : 640 Industrie Alimentaire Résumé : The health status of young people has repercussions on the continuation of their studies and on their adult life. They were described as a population which is characterized by a high frequency of behavior said at risk. Few studies on this subject have been carried out in Algeria, and more specifically on the student population. The aim of this thesis is to describe the relationship between physical activity and the diet of Algerian students with their corpulence. An epidemiological survey was conducted at the University of Brothers Mentouri Constantine 1 in 2015 on a representative sample of 1061 students (63.9 % female), aged 23.3 ± 2.5 years. The data was collected using a survey form (general characteristics, physical activity questionnaire, physical activity journal, usual frequency of food consumption and 24-hours food recall). Anthropometric measurements and body composition were realised: weight, waist, waist circumference (WC), hip circumference (HC), brachial circumference, skin folds (adipomètre), fat mass and fat-free mass (impedancemetry). Systolic and diastolic arterial pressures were also measured. Epi-Info version 3.5.3 and STATA Version 11.0 software were used for data processing. The materiality threshold used was 0.05. Our results showed that the average body mass index (BMI) of the students was 22.4 ± 3.0 kg/m2 (86.9 % were overweight and 13.1 % obese). The sports students represented 26.4 %. Students who walked less than 30 minutes were 4 times more likely to be overweight with a significant difference of 95 % and those being seated longer than 4 hours was 2 times more. Sleep accounted for 36.5 % of the time of a typical day followed by non-sedentary activities (10.9 %). A significant and negative correlation was found between mean physical activity level (PAL=1.51 ± 0.1) and BMI, body fat percentage and WC. Students spent on average 2200.9 ± 404.4 kcal/day with a difference in favor of women (p=0.0030). The average total energy intake of the students was 1993.1 ± 599.6 kcal/day (732.9 kcal/day - 4318.4 kcal/day) with 26.1 % for fat, 13.9 % for protein and 60.0% for carbohydrates. The frequency of consumption of fatty and sugary products was predominant in obese subjects (p<0.05). Significant correlations were found between PAL and the frequency of consumption of fatty and sugary products; energy and nutritional intake; BMI, %FAT and WC. The more the contributions in energy and nutritional increased, the more the corpulence of the students increased. It appears from this study that there is a relationship between physical activity, diet, and algerian student body built. It is desirable to encourage this population to practise walking during their free time, the use of university sports facilities, consume more fruits and vegetables and have a better sleep. Sedentary solicitation must be minimized in daily activities. Information, prevention and promotion actions on the benefits of physical activity and healthy diet must be put in place at national level.
Note de contenu : Annexes.
Diplôme : Doctorat en sciences En ligne : ../theses/agronomie/SER7478.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11310 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité SER/7478 SER/7478 Thèse Bibliothèque principale Thèses Disponible
Titre : Alimentation des enfants 6- 12 ans : Synthese des travaux anterieurs en Algerie et recommandations Type de document : texte imprimé Auteurs : Loubna Bechiri, Auteur ; Abdel-Nacer Agli, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 152 f. Format : 31 cm Note générale : Magister
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Algérie situation alimentaire éducation nutritionnelle enfants sains de 6 à 12ans ANC 2001 aspects quantitatif qualitatif et comportemental de l’alimentation guide
destiné aux enfants.Index. décimale : 640 Industrie Alimentaire Diplôme : Magistère En ligne : ../theses/agronomie/BEC5974.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5928 Alimentation des enfants 6- 12 ans : Synthese des travaux anterieurs en Algerie et recommandations [texte imprimé] / Loubna Bechiri, Auteur ; Abdel-Nacer Agli, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 152 f. ; 31 cm.
Magister
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Algérie situation alimentaire éducation nutritionnelle enfants sains de 6 à 12ans ANC 2001 aspects quantitatif qualitatif et comportemental de l’alimentation guide
destiné aux enfants.Index. décimale : 640 Industrie Alimentaire Diplôme : Magistère En ligne : ../theses/agronomie/BEC5974.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5928 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEC/5974 BEC/5974 Thèse Bibliothèque principale Thèses Disponible
Titre : Alimentation, état nutritionnel, apport calcique et calcémie d'une population de jeunes adultes Type de document : texte imprimé Auteurs : Meriem Bencharif, Auteur ; A. Agli, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 126 f. Format : 31 cm Note générale : Magister
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Apport calcique Calcémie carences nutritionnelles etat nutritionel jeunes adultes. Index. décimale : 640 Industrie Alimentaire Diplôme : Magistère En ligne : ../theses/agronomie/BEN6040.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5952 Alimentation, état nutritionnel, apport calcique et calcémie d'une population de jeunes adultes [texte imprimé] / Meriem Bencharif, Auteur ; A. Agli, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 126 f. ; 31 cm.
Magister
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Nutrition, Alimentation et Technologies Agro-AlimentairesTags : Apport calcique Calcémie carences nutritionnelles etat nutritionel jeunes adultes. Index. décimale : 640 Industrie Alimentaire Diplôme : Magistère En ligne : ../theses/agronomie/BEN6040.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=5952 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/6040 BEN/6040 Thèse Bibliothèque principale Thèses Disponible PermalinkPermalink
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