Academic literature on the topic 'Glucose résiduel'
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Journal articles on the topic "Glucose résiduel":
A. T., Orbugh, Adeyeye E. A., Lala A. O., Durojaye O. J., Ogunleye J. B., Sogunle O. M., and Oso A. O. "Effect of organic acid blend on the growth performance, apparent nutrient digestibility and blood indices of growing turkeys." Nigerian Journal of Animal Production 50, no. 2 (February 28, 2024): 1–15. http://dx.doi.org/10.51791/njap.v50i2.3956.
Dissertations / Theses on the topic "Glucose résiduel":
Briki, Amani. "Production de succinate par Corynebacterium glutamicum en microaérobiose : approches expérimentales et numériques, de l’échelle métabolique au bioréacteur." Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0082.
Succinate is a diacid used nowadays as a building block in the synthesis of various molecules of interest. It is mostly produced by chemical synthesis. A part of succinate is industrially produced using a microbiological process. Corynebacterium glutamicum, a well-known industrial producer of amino acids, is able to produce organic acids, in particular succinate, under micro-aerobic and anaerobic conditions. The aim of this work was thus to understand the physiological response of C. glutamicum 2262 to change in oxygen supply conditions. Both experimental and numerical tools have been implemented. The first step was to identify, experimentally, the parameters influencing the physiological response of C. glutamicum 2262 during batch and continuous cultures. This approach allowed to identify oxygenation level and residual glucose concentration as key parameters for organic acids production. The ratio OUR/GUR was also defined as a relevant indicator of the physiological state of C. glutamicum 2262. It was observed that organic acids were simultaneously produced during micro-aerobic phase corresponding to ratio below 1, whereas, above this value, a maximal growth was obtained. The maximal succinate production was obtained at the lower oxygenation level. Moreover, a re-consumption of the produced succinate was also observed when a threshold residual concentration of glucose was reached. Considering the influence of these two key parameters, a highly performant fed-batch process for the succinate production using a wild-type strain of C. glutamicum was defined. Then, a kinetic model was developed. This primary model was then generalized by integrating a correlation between kinetic parameters of model and oxygenation level. The results of both primary and generalized model simulation, showed an excellent agreement with the experimental data. The generalized model was then successfully transposed to a C. glutamicum mutant strain. In addition, a simplified metabolic model for C. glutamicum 2262 was constructed to understand the metabolic response of this bacterium in micro-aerobiosis. Both predicted production fluxes of lactate in microaerobiosis and of biomass synthesis during aerobiosis phase, under stationary conditions, agreed with the experimental data. This metabolic model was also able to predict, under dynamic conditions, the concentration profiles of the succinate during highly limited oxygen supply conditions
Fromanger, Romain. "Etude des possibilités de valorisation des pentoses par fermentation alcoolique d'hydrolysats de paille de blé." Thesis, Toulouse, INSA, 2010. http://www.theses.fr/2010ISAT0038/document.
The yeast Candida shehatae was the model microorganism of the study. This yeast canconvert xylose and glucose into ethanol, unlike Saccharomyces cerevisiae traditionally usedin industrial processes, which cannot convert xylose. Performance optimization of ethanolproduction from xylose is performed through maximization of the following three criteria:volumetric productivity, final ethanol titer and yield of ethanol over xylose. To direct thecarbon flux towards ethanol production, the major parameter which must be controlled is thelevel of oxygen limitation. Cultures are carried out in fed-batch in mineral medium andperformed in two phases: the first one is not limited in oxygen and the second one is oxygenrestricted. A mean value of qO2 equal to 1.19 mmolO2/gX/h maximizes the three criteria ofperformance on xylose: ethanol yield (0.327 gETOH/g-xylose), the maximum specificproductivity (0.22 gETOH/gX/h) and the final ethanol titer (48.81 g/L). For glucosefermentation, ethanol yield is the highest (0.411 gETOH/g-glucose) when qO2 is low as anaverage value of 0.30 mmolO2/gX/h, while the specific productivity and the ethanol final titerreach maximum values of 0.35 gETOH/gX/h and 54.19 g/L for respectively qO2 of 1.7 and2.5 mmolO2/gX/h.For the simultaneous consumption of the two substrates, a phenomenon of glucose repressionover xylose is observed in chemostat experiment with glucose pulse on xylose steady state.The presence of intracellular enzymes of the xylose pathway (XR and XDH) is not sufficientfor efficient co-consumption of both sugars and glucose is preferentially consumed.In order to structure the knowledge obtained on the metabolism of C. shehatae and tooptimize by simulation the co-culture C. shehatae / S. cerevisiae to produce ethanol fromxylose/ glucose mixtures, a kinetic model of C. shehatae is built. This model is validated withpure substrate cultures (xylose and glucose separated). A kinetic model of co-culture is thenbuilt in order to simulate several fermentation strategies to optimize the ethanol productionfrom xylose/glucose mixture similar to wheat straw hydrolysates
Marguet, Didier. "Analyses structurale et fonctionnelle du gène SRP de Saccharomyces cerevisiae codant pour une protéine riche en résidu sérine : étude de sa régulation transcriptionnelle positive par le glucose." Grenoble 1, 1986. http://www.theses.fr/1986GRE10036.
Ajandouz, El Hassan. "Mode d'action des alpha-amylases d'orge et de pancréas de porc sur les substrats nitrophényles. Détermination des énergies de fixation des résidus de glucose aux sous-sites du centre actif." Aix-Marseille 3, 1993. http://www.theses.fr/1993AIX30059.
Yaqub, Tahir. "Étude de l'interaction entre les domaines transmembranaires du récepteur du polypeptide insulinotrope glucose-dépendant (GIP) et la région amino terminale du peptide." Toulouse 3, 2009. http://www.theses.fr/2009TOU30314.
Glucose-dependent insulinotropic polypeptide receptor (GIP-R), a member of subfamily B of G-protein coupled receptor (GPCR), modulates the regulation of important physiologic and metabolic functions in the body such as glucose and lipid homeostasis that make it a potentially attractive therapeutic target for new pharmacological agents such as non-peptide ligands for the treatment of diabetes mellitus and obesity. However, the molecular mechanisms responsible for receptor activation are poorly understood in receptors belonging to family B. Although a general two step activation mechanism has been postulated for family B receptors yet the precise residues of the receptor that participate in the process remain to be delineated. One of the principal objectives of my research project was to identify the binding site of human GIP-R by precisely recognizing the residues that are implicated in interactions with the amino acids of the critically important N-terminal bioactive domain of the hormone that has been shown to be responsible for receptor activation. GIP. GIP-R complex models were constructed, based on multiple sequence alignments of both receptors and the ligands and the in-silico docking of the peptide using Adenosine A2a receptor as template for transmembrane domain of receptor while also taking X-ray structural data on the interaction of GIP and GIP-R ECD into consideration. Residues of the receptor identified to be involved in interaction with the ligand were subjected to site-directed mutagenesis. The pharmacological activity assays of the mutants demonstrated that Arg183 and Arg190 in TMH2, Arg300 in TMH5 and Phe357 in TMH6 were important determinants for receptor activation as demonstrated by their significant decrease in potency to induce cAMP formation, a measure of ligand induce receptor activation. Further characterization of these mutants, including tests with alanine substituted GIP analogues, demonstrated interaction of Glu3 in GIP with Arg183 in GIP-R. Furthermore, they strongly supported a binding mode of GIP to GIP-R in which the N-terminal moiety of GIP was sited within transmembrane helices 2, 3, 5, and 6 with biologically crucial Tyr1 interacting with Gln224 (TMH3), Arg300 (TMH5) and Phe357 (TMH6) of the receptor. We also prepared and ascertained the ability of GIP (1-30)-Alexa- F-647 to stimulate the receptor in comparison to GIP (1-30) and found that both activated the receptor with equal potency. The fluorescent peptide was then used to demonstrate that all the mutated receptors were expressed at HEK293 cell surface at levels similar to that of the WT-GIP-R by performing Flow cytometery and Confocal microscopy. We therefore present a model for GIP. GIP-R pin pointing the exact residues and the helixes involved of the receptor involved in activation process and the interactions with their partner amino acids in the N-terminal of the peptide. This experimentally validated model represents an important step towards understanding activation mechanism of GIP-R which should facilitate the rational design of therapeutic agents
Haine-Joubert, Raymonde. "Contribution à l'etude des lectines solubles : isolement et caractérisation d'une lectine soluble spécifique des résidus béta-d-galactosyles à partir d'extraits de cerveau de mammifères." Paris 13, 1987. http://www.theses.fr/1987PA132001.
Book chapters on the topic "Glucose résiduel":
Roffet-Salque, Mélanie, Pascale Gerbault, and Rosalind E. Gillis. "Une histoire de l’exploitation laitière : approches génétique, archéozoologique et biomoléculaire." In Regards croisés: quand les sciences archéologiques rencontrent l'innovation, 1–24. Editions des archives contemporaines, 2017. http://dx.doi.org/10.17184/eac.3788.