Literatura científica selecionada sobre o tema "Digestion – Teneur en acides aminés"
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Artigos de revistas sobre o assunto "Digestion – Teneur en acides aminés"
SEVE, B. "Alimentation du porc en croissance : intégration des concepts de protéine idéale, de disponibilité digestive des acides aminés et d’énergie nette". INRAE Productions Animales 7, n.º 4 (27 de setembro de 1994): 275–91. http://dx.doi.org/10.20870/productions-animales.1994.7.4.4175.
Texto completo da fonteOkon, B., L. A. Ibom, Y. D. R. Anlade e A. Dauda. "A biotechnology perspective of livestock nutrition on feed additives: a mini review". Nigerian Journal of Animal Production 49, n.º 5 (26 de maio de 2023): 47–58. http://dx.doi.org/10.51791/njap.v49i5.3763.
Texto completo da fonteAUFRERE, J., K. THEODORIDOU e R. BAUMONT. "Valeur alimentaire pour les ruminants des légumineuses contenant des tannins condensés en milieux tempérés". INRAE Productions Animales 25, n.º 1 (31 de março de 2012): 29–44. http://dx.doi.org/10.20870/productions-animales.2012.25.1.3193.
Texto completo da fontePHOCAS, F., J. AGABRIEL, M. DUPONT-NIVET, J. GEURDEN, F. MÉDALE, S. MIGNON-GRASTEAU, H. GILBERT e J. Y. DOURMAD. "Le phénotypage de l’efficacité alimentaire et de ses composantes, une nécessité pour accroître l’efficience des productions animales". INRAE Productions Animales 27, n.º 3 (28 de agosto de 2014): 235–48. http://dx.doi.org/10.20870/productions-animales.2014.27.3.3070.
Texto completo da fonteLE FLOC’H, N., e B. SEVE. "Le devenir des protéines et des acides aminés dans l’intestin du porc : de la digestion à l’apparition dans la veine porte". INRAE Productions Animales 13, n.º 5 (22 de outubro de 2000): 303–14. http://dx.doi.org/10.20870/productions-animales.2000.13.5.3798.
Texto completo da fonteHENRY, Y. "Signification de la protéine équilibrée pour le porc : intérêt et limites". INRAE Productions Animales 1, n.º 1 (11 de fevereiro de 1988): 65–74. http://dx.doi.org/10.20870/productions-animales.1988.1.1.4437.
Texto completo da fonteBESLE, J. M., e J. P. JOUANY. "La biomasse pariétale des fourrages et sa valorisation par les herbivores". INRAE Productions Animales 3, n.º 1 (3 de fevereiro de 1990): 39–50. http://dx.doi.org/10.20870/productions-animales.1990.3.1.4359.
Texto completo da fonteLECLERCQ, B., e C. BEAUMONT. "Etude par simulation de la réponse des troupeaux de volailles aux apports d’acides aminés et de protéines". INRAE Productions Animales 13, n.º 1 (18 de fevereiro de 2000): 47–59. http://dx.doi.org/10.20870/productions-animales.2000.13.1.3768.
Texto completo da fonteGLOAGUEN, M., N. LE FLOC’H e J. VAN MILGEN. "Couverture des besoins en acides aminés chez le porcelet alimenté avec des régimes à basse teneur en protéines". INRAE Productions Animales 26, n.º 3 (18 de junho de 2013): 277–88. http://dx.doi.org/10.20870/productions-animales.2013.26.3.3157.
Texto completo da fonteLE FLOC’H, M. "Conséquences d’un état inflammatoire ou infectieux sur le métabolisme et le besoin en acides aminés chez le porc". INRAE Productions Animales 13, n.º 1 (18 de fevereiro de 2000): 3–10. http://dx.doi.org/10.20870/productions-animales.2000.13.1.3763.
Texto completo da fonteTeses / dissertações sobre o assunto "Digestion – Teneur en acides aminés"
Benhaddou, Soukaïna. "Étude de la biodisponibilité digestive et métabolique des protéines alimentaires après bypass gastrique". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASB005.
Texto completo da fonteBariatric surgery stands as the most effective treatment for morbid obesity, with the Roux-en-Y Gastric Bypass (RYGB) being a commonly employed procedure. Its efficacy in weight loss and the reduction of comorbidities has been extensively demonstrated. Despite its frequent association with protein deficiency, the consequences of RYGB on the digestive and metabolic availability of proteins remain poorly understood. This thesis aims to assess the effects of RYGB on the digestive and metabolic fate of dietary proteins, using a test meal containing ¹⁵N labeled milk proteins in both rats and humans. Rats were monitored for 1 or 3 months post-RYGB to evaluate its mid-term effects on the intestinal mucosa, digestibility, and metabolic availability of dietary proteins. This study showed that protein digestibility was not altered by RYGB, even though the intestinal mucosa is hypertrophied. A transient decrease in nitrogen retention in peripheral organs and a persistent increase in deamination of dietary amino acids (AA) were observed. In humans, the metabolic fate of proteins was assessed one month before and six months after RYGB in 4 patients over 9 included (NCT04934826). Three of them exhibit a mild to marked increase in AA catabolism. RYGB induced variable modifications in dietary nitrogen metabolism among individuals. This thesis demonstrated that RYGB alters the metabolic availability of proteins, mainly through an increase in postprandial catabolism of AA. In addition to these studies, the development of small intestinal organoids of rats was conducted to mimic intestinal modifications after RYGB. The organoids exhibit substantial variability (size, shape, and gene expression), with no differences observed between those derived from control rats and RYGB rats
Lamghari, El Kossori Lalla Radia. "Effets des concentrés protéiques de Lupin blanc doux (Lupinus albus) sur la prise alimentaire". Nancy 1, 1996. http://www.theses.fr/1996NAN10345.
Texto completo da fonteCozannet, Pierre. "Valeur nutritionnelle des drêches de blé liées à la production de bioéthanol pour les animaux monograstriques". Rennes, Agrocampus Ouest, 2010. http://www.theses.fr/2010NSARB208.
Texto completo da fonteTwo European Directives have set indicative targets to promote the use of renewable fuels in the transport sector. This terminology includes tswo main productions, bioethanol and biodiesel. The biodiesel comes from crute fat esterification. Bioethanol is currently produced via fermentation of glucose into ethanol. When this productin is realized from cerals, mainly wheat in Europe, it results in one main by-product, the dredi distillers grains with solubles (DDGS) whose nutritional value is poortly described, especially for non ruminants. Thus, the purpose of the thesis has been to measure average nutrients content energy values for pigs (growing pig, adult sow) and poultries (adult rooster, broiler, latyer, growing turkey) and the protein values (standardized ileal digestibility ; SID) for pigs and poultries of 10 European what DDGS samples selected to be representative of all the existing situations
Managau, Lyliane Marie. "Contribution à l'étude de la matière organique estuarienne et marine : classe des acides aminés". Brest, 1987. http://www.theses.fr/1987BRES2012.
Texto completo da fonteMiele, Alberto. "Recherches sur la composition en acides aminés et en acides gras des feuilles et des raisins de Vitis vinifera L. Cv Cabernet Sauvignon pendant la période de maturation et en fonction du système de conduite". Bordeaux 2, 1986. http://www.theses.fr/1986BOR20023.
Texto completo da fonteBarbé, Florence. "Compréhension et modélisation de l’impact de la structure des matrices laitières sur la biodisponibilité des acides aminés chez le mini-porc". Rennes, Agrocampus Ouest, 2012. http://www.theses.fr/2012NSARB229.
Texto completo da fonteThe impact of the structure on the biological and nutritional properties of food has received a growing interest recently. Digestion is a complex process involving different steps such as the macronutrients hydrolysis, their gastric emptying and subsequent transit in the small intestine, the release of their hydrolysis products, and the absorption of the final nutrients. All of these mechanisms are susceptible to be influenced by the structure of the meal. Milk is a widely consumed product in human nutrition and milk proteins are well-known for their ability to provide essentials amino acids to the body. Milk can be transformed into a high diversity of manufactured derivatives, such as yogurt and cheese. Moreover these foods are highly digestible and also known as sources of potential bioactive peptides and amino acids having physiological roles. For these reasons, milk could be considered as a potent vector of nutritional benefits. This study aimed at investigating the effect of the dairy matrix structure, as modified by processes commonly used in the dairy industry, on the digestion kinetics of the milk proteins, caseins and β-lactoglobulin. Three processing operations have been investigated alone or in combination: heat treatment and either acid- or rennet-induced gelation of milk. A total of six dairy matrices having the same composition, but differing by their structures, were prepared: unheated and heated skim milk, the corresponding rennet gels, and a non-stirred or a stirred acid gel prepared from the heated milk. These meals were then given to six minipigs fitted with cannulas at the duodenum and mid-jejunum and an arterial catheter. Effluents and plasma samples were collected at different times over a 7 h-period after meal ingestion. Duodenal chromium concentrations (marker of the liquid phase of the meal), dry matter content, residual concentrations of milk proteins, production of peptides and plasmatic amino acid concentrations were followed over the postprandial period. Caseins and β-lactoglobulin were respectively sensitive and resistant to hydrolysis in the stomach with the unheated matrices, but showed similar digestion kinetics with the heated matrices. Rennet- and acid-induced gelation of milk slowed down the outflow of the meal from the stomach and delayed the duodenal appearance of both proteins and the subsequent absorption of amino acids, which resulted in a decrease in their bioavailability in peripheral blood. The rennet gels, and more specifically the raw rennet gel, displayed specific digestion behaviour with low levels of all the parameters measured in the duodenal effluents and in the plasma. Several hypotheses were proposed to explain the rennet gels specific digestion, such as a dilution by digestive secretions, a resistance to hydrolysis and a long gastric retention due to a mechanism of gastric syneresis. The overall digestion of both proteins was high at the jejunal site, whatever the structure of the ingested dairy matrix was. The gastric phase was thus shown to play a key role in the control of nutrients delivery and bioavailability, milk protein absorption being conditioned by their rate of appearance in the duodenum. When focusing on the population of peptides released in the duodenum, the structure of the dairy matrices did not affect the location of cleavage sites, but had an impact on the number of peptides identified. As a complementary method to animal experiments, an in silico approach was used to have a mechanistic understanding of the digestion process. A compartmental model, based on ordinary differential equations, was developed to match closely in vivo measurements by describing the gastric emptying, intestinal transit and the subsequent absorption of exogenous amino acids. This model provided a good fitting of experimental data and allowed estimating parameters, mainly related to the transit along the digestive tract. Model simulations showed that differences in the kinetics of amino acid absorption can be fully understood by considering the behaviour of the dairy matrices within the stomach. This model offers interesting perspective for the integration of food structure parameters, and more particularly for dairy products, in the comprehensive view of the nutritional quality of food products. The in vivo and in silico approaches employed in this study therefore underlined the crucial influence of the product structure on nutrient bioavailability. They also added valuable contribution to consider the manufacturing of food as a promising tool for specific nutrition goals adapted to different subpopulations (elderly, overweight people…)
Amiche, Mohamed. "Les Peptides opioïdes de la peau d'amphibiens : la dermophine et la dermenkephaline : études structurales et pharmacologique". Paris 6, 1990. http://www.theses.fr/1990PA066017.
Texto completo da fonteDandach, Said. "Rôle des acides aminés dans la production d'amines biogènes chez Oenococcus oeni". Thesis, Dijon, 2013. http://www.theses.fr/2013DIJOS020/document.
Texto completo da fonteIn wine biogenic amines (BA) are mainly of microbial origin, Oenococcus oeni, the mainresponsible for malolactic fermentation, has been identified as a BA producer from nitrogenprecursors. Oenococcus oeni possess numerous amino acid auxotrophies that are precursors ofbiogenic amines. No study has been done so far to look at the relationship betweenauxotrophy for amino acids precursors of BA and the level of BA in the medium. In order todo so, 80 Oenococcus oeni strains were isolated from red wines. The detection of genesencoding the different decarboxylases responsible for BA synthesis has been realised. Inparallel, the auxotrophy for the four amino acids (Arg, Tyr, His, Phe) precursors of BA hascharacterized. Our results demonstrate that there is not direct correlation between auxotrophyand the accumulation of the corresponding BA as well as between the presence ofdecarboxylase gene and the accumulation of the corresponding BA. High levels of agmatineproduced from arginine decarboxylation by Oenococcus oeni is reported for the first time.Agmatine production is strain dependant. the most adapted to acidic environment is the strainwhith use arginine in higher level with same proportion for ADI pathway and argininedecarboxylase. Agmatine addition in wines reduce woody aroma probably by formation ofsciff bases between aromla compounds and amine
Zouaoui, Maroua. "Étude de l'impact des enzymes exogènes sur la digestibilité des acides aminés chez le porc et le poulet : approche par méta-analyse". Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/33069.
Texto completo da fontePhytates and non-starch polysaccharides (NSP) are abundant antinutritional factors in pig and broiler diets. Although phytates constitute a phosphorus (P) reservoir, this P is not available because monogastric animals produce a small amount of endogenous phytase. Microbial phytases have been incorporated into diets and has revealed the negative effect of phytates on the digestibility of amino acids (AA). In addition to phytates, NSPs are also indigestible and resistant to the digestion process in monogastric animals. The NSPs encapsulate also nutrients, which decrease AA and energy digestibility. It is important to know the mechanisms of action of phytase and xylanase in the degradation of antinutritional factors and improving the digestibility of AA, as well as apparent metabolizable energy content (AME). A meta-analysis approach allowed to establish models for predicting the digestibility of AA from dietary AA, phytase and NDF (Neutral Detergent Fiber) concentrations in pigs, and from dietary AA, phytase and phytic phosphorus (PP) concentrations in broilers. A predictive model of AA digestibility in broilers has also been established from xylanase supplementation and dietary NDF/NSP concentrations. Finally, xylanase activity, gross dietary energy (GE) and NDF/NSP concentrations were the best predictors of AME. The current models allow quantifying the effect of phytase on AA in pigs and broilers and the effect of xylanase on AA and AME in broilers, which is important to use these enzymes accurately in diet formulation.
Idrissi, Taghki Abdelghani. "Etude du type métabolisme intégré entre embryons de colza natif et transgénique : analyse et compréhension de la modification induites dans les lignées transgéniques de colza et de lin : analyse enzymatique et métabolique". Compiègne, 2009. http://www.theses.fr/2009COMP1798.
Texto completo da fonteThe importance of these unusual structures for fatty acids, the development of genetic engineering and the identification and isolation of many genes involved in the biosynthesis and regulation of lipid metabolism in plants, have provided new perspectives for the production of vegetable oil with a higher value in field crops. In this perspective, REFLAX and PAGIOS programmes were developed. The aim of these projects is the production of unusual fatty acids in agronomie plants (rapeseed and flan), through the creation of a new ,biosthetic pathway for branched fatty acids in the plast. Rapeseed plants were transformed with four bacterial enzymes: TD, KS, PCCA and PCCB. These proteins were identified as key enzymes in the synthesis of branched fatty acids. The level of methylmalonyl-CoA, a precursor of the methyl branched fatty acid synthesis, was amplified thanks to the introduction of these four genes. However the accumulation of methyl branched-chain fatty acids in rapeseed plants transformed, remains very low (<2%). To get a deeper understanding of this low production of BFA, we incubated whole rapeseed embryos, at different stages of development, in presence of 13C-labelled glucose and observed the label redistribution by NMR. The NMR and biochemical analysis showed that the synthesis of BFA was very low and transient (only at 15 J). Biomass synthesis fluxes were similar between native and transformed plant. The central carbon metabolism was not affected by the introduction of these genes. However, an accumulation of' pyruvate and kétobutyrate and a low accumulation of branched Chain amino acids (leucine, isoleucine and valine) at the transformed lines were observed
Capítulos de livros sobre o assunto "Digestion – Teneur en acides aminés"
Kratochvil, L., J. Mátlová e K. Zadraižl. "L’influence de la Rasse et de la Lactation sur la Teneur du Lait en Acides Aminés". In MILK the vital force, 146. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3733-8_122.
Texto completo da fonte