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Dissertations / Theses on the topic 'Fermentlar'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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1

Clement, Tiphaine. "Utilisation d'un fermenteur continu multi-étagé pour la compréhension des mécanismes d'adaptation de la levure à des ajouts d'azote en conditions oenologiques." Thesis, Montpellier, SupAgro, 2012. http://www.theses.fr/2012NSAM0017/document.

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Nous avons mis au point un fermenteur continu multi-étagé (MSCF) dans le but de reproduire les conditions de la fermentation alcoolique en conditions œnologiques. Ce bioréacteur permet de maintenir les levures dans un milieu stable et contrôlé tout en découplant la croissance et la phase stationnaire. Le système offre donc la possibilité d'obtenir des levures non croissantes dans un milieu de composition stable. Dans un premier temps, nous avons validé la pertinence du MSCF pour reproduire les conditions de fermentation du batch, par approche intégrée (des paramètres cinétiques, des métabolite
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2

Sene, Talita Samanta. "Modos de fermentar, sentidos de embriagar e concepções de ser." reponame:Repositório Institucional da UFSC, 2015. https://repositorio.ufsc.br/xmlui/handle/123456789/180876.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas, Programa de Pós-Graduação em Antropologia Social, Florianópolis, 2015.<br>Made available in DSpace on 2017-11-14T03:03:58Z (GMT). No. of bitstreams: 1 349148.pdf: 1910596 bytes, checksum: 4f2ec5276a88787215157988ba3a34b3 (MD5) Previous issue date: 2015<br>Esta dissertação tem como tema as concepções de algumas pessoas de etnias da família linguística Tukano Oriental acerca de uma diversidade de tipos e modalidades de bebidas fermentadas que se reúnem sobre o rótulo ?caxiri? ? o que conven
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3

Pinchuk, Robert. "Liposan production in the Self-Cycling Fermentor." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0033/MQ64242.pdf.

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4

Peters, A. "A constant-depth laboratory model film fermenter." Thesis, Bucks New University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383857.

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5

Ationu, A. "Comparison of fixed Acetobacter film fermenter systems." Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382281.

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6

Morgan, J. E. P. "Studies on techniques for overcoming fermenter contaminations." Thesis, University of Cambridge, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257153.

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7

Henneken, Lothar. "Biologischer Abbau des Komplexbildners EDTA : Reaktionskinetik und Verfahrensentwicklung /." Düsseldorf : VDI-Verl, 1995. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=006992114&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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8

Suleau-Briand, Audrey. "Etude transcriptomique du métabolisme central et de sa variabilité chez la levure Kluyveromyces lactis : comparaison de la souche de référence et d'une souche industrielle." Paris 11, 2005. http://www.theses.fr/2005PA112119.

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Kluyveromyces lactis est l'une des espèces de levures majoritaires dans les fromages. Elle présente un intérêt à la fois fondamental et industriel. En effet, malgré sa proximité relative du modèle classique Saccharomyces cerevisiae sa physiologie est très différente. Sa plus faible activité fermentaire en fait un organisme de choix pour la production de protéines recombinantes et sa capacité à métaboliser le lactose justifie son utilisation en industrie laitière. Bien que K. Lactis soit la levure non conventionnelle la plus étudiée, de nombreux aspects de sa physiologie restaient à éclaircir,
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9

Schnell, André D. "Performance analysis of an integrated axial microfilter-fermentor." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59428.

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A novel fermentation unit comprising an axial microfilter for cell retention was evaluated for continuous-flow aerobic cultivations of a yeast, bacterium and fungus. Performance characteristics such as filtration rates and cell accumulation were assessed as a function of filter rotational speed, operating pressure, cultivation time and microfilter type (i.e., membrane or porous metallic). A viscous extracellular polymer solution was also tested.<br>Yeast (S. cerevisiae) and bacterial (E. coli) cell concentrations were enhanced by as much as 16-fold and 8-fold over ordinary batch growth, respec
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10

Boon, Lotte. "Mixing studies related to large scale fermenter operations." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364713.

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11

Potu, Ramesh Babu. "THE EFFECT OF LIPID SUPPLEMENTS ON THE POPULATION OF SELECTED RUMINAL BACTERIA VARIES WITH THE FATTY ACID COMPOSITION." OpenSIUC, 2009. https://opensiuc.lib.siu.edu/theses/67.

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There is an increasing body of evidence that conjugated linoleic acid (c9t11 CLA) suppresses chemically induced tumor development in cell cultures and animal models. Ruminant-derived foods make a major contribution to total fat consumption and are the main source of c9t11 CLA in the human diet. In light of the potential benefits to long-term human health, there has been increased interest in enhancing the concentrations of potentially beneficial fatty acids (FA) in milk and meat. Factors affecting c9t11CLA production and secretion into milk fat have been extensively studied the last 10 years a
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12

Matos, Ítalo Thiago Silveira Rocha. "Seleção de leveduras amazônicas capazes de metabolizar hidrolisado hemicelulósico e fermentar D-xilose." Universidade Federal do Amazonas, 2010. http://tede.ufam.edu.br/handle/tede/3610.

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Made available in DSpace on 2015-04-22T22:12:33Z (GMT). No. of bitstreams: 1 italo.pdf: 843750 bytes, checksum: 971dc2983746976f9e3b4bd789755fb5 (MD5) Previous issue date: 2010-03-04<br>Yeasts were isolated from different Amazon habitat: beetles gut (Carabidae), midgut and hindgut of Nasutitermes sp., soil samples from savanna (Boa Vista city, Roraima state) and Amazon rain forest. The yeasts were selected according to the capability of metabolize sugarcane bagasse hemicellulosic hydrolysate (HACA) as one carbon source, assimilate and fermenting D-xylose. To selective medium preparation, H
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13

Mulchandani, Ashok K. "Biosynthesis of industrial solvents in a cell-retention fermentor." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72071.

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The continuous culture performance of a custom designed cell-retention (CR) bioreactor prototype was investigated for the acetone - butanol - ethanol (A-B-E) fermentation by Clostridium acetobutylicum.<br>A mathematical model for the kinetics of the A-B-E fermentation was developed reflecting the biochemical pathway and culture behaviour. Dynamic and steady-state behaviour of C. acetobutylicum in the CR bioreactor was simulated on the computer and experimentally tested.<br>In an operational mode with a total cell-retention, a steady-state operation of the bioreactor was predicted up to 52 g/L
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14

Vlaev, Dimiter S. "Mixing, mass transfer and bioreaction in an industrial fermenter." Thesis, University of Manchester, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680178.

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15

Major, N. C. "The physiology of lactic acid production by Lactobacillus delbreuckii in a cell recycle fermenter." Thesis, University of Kent, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377972.

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16

Moran, Paul James. "The flocculation and downstream processing of microbial suspensions." Thesis, University of Huddersfield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390633.

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17

Brooks, P. C. "Liquid circulation and mixing in single and dual impeller stirred tanks." Thesis, University of Exeter, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380736.

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18

Sarkis, Bassam E. (Bassam Elias). "Biodegradation of aromatic compounds in a self-cycling fermenter (SCF)." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56769.

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The Self-Cycling Fermentation (SCF) technique was applied to the biodegradation of several aromatic compounds by Pseudomonas putida and Pseudomonas fluorescens. The SCF technique was shown to be a useful research tool in aromatic biodegradation studies as well as a potential pollution treatment method. Advantages of SCFs include stable and highly repeatable performance and almost complete substrate consumption. Biomass concentration, cycle time and the minimum dissolved oxygen level were monitored from cycle to cycle and the variation of these parameters during steady-state operation was less
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19

Menkel, F. "Enhancement of fermenter design procedures based on batch culture analysis." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638179.

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The objective of this work was to develop an unstructured, deterministic and uniform mathematical model of cellular activity in a liquid phase batch culture, including the initial lag phase. A new mathematical model, termed the algebraic model, has been developed for predicting cellular activity of a liquid phase batch culture. In contrast to the Monod (1949), model the algebraic unstructured mathematical rate model is based on the natural order of cellular processes, namely, substrate uptake, followed by conversion into energy and new cells. The specific substrate uptake rate is modelled by a
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20

Petkauskaitė, Raimonda. "Termostabilūs pektiną degraduojantys fermentai: Geobacillus genties bakterijų pektinolizinio aktyvumo tyrimai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2011~D_20140627_171633-72718.

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Pektinas sudaro didžiausią makromolekulių masę, kuri randama pirminės augalų ląstelių sienelės bei tarpinės plokštelės, atsakingos už tarpląstelinę adheziją, sudėtyje. Pektininė matrica sukuria pagrindą celiuliozės-glikanų tinklui, lemia jo tąsumą, taip pat atsako už porų susidarymą bei yra pagrindinė adhezinė medžiaga tarp ląstelių (Willats, McCartney et al. 2001). Šio polisacharido pagrindą sudaro &#945;-(1-4)-glikozidiniais ryšiais sujungtos D-galakturono rūgšties liekanos (GalpA) ir mažesnė dalis kitų sacharidų, tokių kaip L-ramnozė, arabinozė, galaktozė ir ksilozė. GalpA karboksigrupės yr
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21

Russell, Andrew Baxter. "Hydrodynamics and oxygen transfer in a pilot scale airlift fermenter." Thesis, University College London (University of London), 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266366.

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22

Godoy, Victor Ribeiro de. "Fermentação de maltotriose por leveduras Saccharomyces cerevisiae recombinantes." reponame:Repositório Institucional da UFSC, 2015. https://repositorio.ufsc.br/xmlui/handle/123456789/162605.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Biotecnologia e Biociências, Florianópolis, 2015.<br>Made available in DSpace on 2016-05-24T17:26:34Z (GMT). No. of bitstreams: 1 338219.pdf: 1806932 bytes, checksum: cb4e68c860e46d1c5b4be98ef954ceed (MD5) Previous issue date: 2015<br>Na levedura S. cerevisiae os carboidratos sacarose, maltose e maltotriose são fermentados por vias metabólicas diferentes: a sacarose é hidrolisada pela invertase extracelular (codificada pelos genes SUC), enquanto maltose e m
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23

Webber, Jonathan 1969. "Production of Sophorolipid from Candida bombicola using the self cycling fermentor." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33351.

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The yeast Candida bombicola (ATCC 22214) was grown in the self-cycling fermentor (SCF). A medium with both glucose and hexadecane was used to examine sophorolipid production. The sophorolipid was collected in a crystalline form. A modified control scheme that monitored the rate of dissolved oxygen (DO) consumption was successfully implemented to account for the weak or nonexistent minima in the DO.<br>The effect of harvesting with the circulation pump off was also examined. An improvement in the usage of hexadecane due to increased carry over to subsequent cycles was observed. Production rates
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24

Kawasaki, Yukie. "Scalable Bio-Production of High Value Products in Bacteria." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4609.

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Biliverdin IXα is a green bile pigment produced by enzymatic cleavage of a tetrapyrrole ring of heme by heme oxygenase. While biliverdin IXα is emerging as an effective cytoprotectant, the conventional method for producing biliverdin IXα by chemical conversion of animal bile is not suitable for large scale production. A novel scalable production method was pursued via bacterial fermentation. Recombinant Escherichia coli strains were obtained by sequence optimization and plasmid transformation of a cyanobacterial heme oxygenase gene. Further strain development was done by plasmid overexpression
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25

May, Michael John. "Production of lipase by Candida bombicola in a self-cycling fermenter, SCF." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29615.pdf.

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26

May, Michael 1972. "Production of Lipase by Candida bombicola in a self-cycling fermenter (SCF)." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27242.

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The Self-Cycling Fermentation (SCF) technique and an agar diffusion assay were used to follow the production of lipase by Candida bombicola. Repeatable lipase production profiles were determined for two different media. Each medium gave a considerably different profile.<br>When the broth contained oil, 60 to 80% of the lipase activity remained after freezing. All activity was lost when the broth did not contain oil.<br>The lipase was found to be associated with the cell. Up to a certain concentration of lipase, the presence of agar caused the lipase to disassociate from the cell and diffuse in
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27

Gaidhani, Hemraj K. "An experimental investigation of Pullulan fermentation in a batch oscillatory baffled fermenter." Thesis, Heriot-Watt University, 2004. http://hdl.handle.net/10399/338.

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28

Kim, Jong Oh. "PRODUCTION EFFICIENCY AND MECHANISM ANALYSIS OF MEMBRANE-COUPLED ANAEROBIC ORGANIC ACID FERMENTER." Kyoto University, 1999. http://hdl.handle.net/2433/181316.

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要旨pdfファイル:氏名「金鍾[王+吾]」<br>Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(工学)<br>甲第8023号<br>工博第1868号<br>新制||工||1156(附属図書館)<br>UT51-99-T734<br>京都大学大学院工学研究科環境工学専攻<br>(主査)教授 宗宮 功, 教授 寺島 泰, 教授 津野 洋<br>学位規則第4条第1項該当
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29

Nunzi, Frédéric. "Relations structure fonction de la rusticyanine chez Thiobacillus ferrooxidans : du fermenteur au cristal." Aix-Marseille 1, 1993. http://www.theses.fr/1993AIX11046.

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La chaine de transfert d'electrons impliquee dans l'oxydation du fer par thiobacillus ferrooxidans, lors des phenomenes de biolixiviation, est peu connue. Afin d'en preciser les premieres etapes, nous nous sommes donc interesses aux relations structure/fonction du composant majeur de cette chaine: la rusticyanine. La construction d'un fermenteur adapte a la culture de t. Ferrooxidans a permis une approche structurale. Ainsi, l'utilisation de differentes techniques biophysiques (rmn, rpe, electrochimie) et biochimique (sequencage) ont permis de mieux caracteriser la rusticyanine. Il s'agit d'un
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30

Harrison, Joanna Shan. "Production of recombinant antibody fragments in microorgansms." Thesis, University College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244739.

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31

Pilz, Roman Daniel. "Partikelbeanspruchung in mehrphasig betriebenen Airlift-Reaktoren." Paderborn FIT-Verl, 2005. http://d-nb.info/991886224/04.

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32

Ley, Ronald John. "The effect of containment measures applied to the exhaust gas of a fermenter." Thesis, University College London (University of London), 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269948.

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33

McEntyre, Johanna Ruth. "Plant cell culture : physiological aspects of natural immobilisation in a fluidised bed fermenter." Thesis, Manchester Metropolitan University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359074.

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34

Duffy, Louise Elizabeth. "A novel fermenter design for the 'in situ' extraction of acetone and butanol." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47414.

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35

Birou, Bernard Birou Bernard. "Etude de la chaleur dégagée par des cultures microbiennes dans un fermenteur de laboratoire /." [S.l.] : [s.n.], 1986. http://library.epfl.ch/theses/?nr=612.

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36

Adjiri, Djamila. "Essai de simulation des fermentations caecale du lapin en fermenteur à flux semi-continu." Toulouse, INPT, 1992. http://www.theses.fr/1992INPT004A.

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Le present travail porte sur la mise au point d'une technique de simulation des fermentations caecales du lapin utilisant un systeme de fermentation semi-continu de type rusitec (caecum artificiel) experimentant differents substrats. Les taux de disparition de la matiere organique et des constituants membranaires des substrats pretraites sont proches de ceux observes au niveau caecal (30% et 21% a 22%). Les ph observes avec les substrats pretraites sont relativement eleves compares aux valeurs mesurees in vivo (6,5 et 6,8 vs 5,7 a 6,2) et sont superieurs a ceux obtenus avec l'aliment non trait
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37

Rossi, Raquel Andrade de. "Isolamento e seleção de leveduras nativas dos biomas brasileiros com habilidade em fermentar a etanol açucares não convencionais." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/254729.

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Orientador: Lucia Regina Durrant<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-14T14:31:21Z (GMT). No. of bitstreams: 1 Rossi_RaquelAndradede_M.pdf: 2252972 bytes, checksum: c504b3299931a04c688b6e1100f129fb (MD5) Previous issue date: 2009<br>Resumo: O bagaço da cana-de-açúcar é considerado uma biomassa lignocelulósica promissora para a produção de etanol, devido a sua composição em açúcares, grande disponibilidade e baixo custo. A levedura Saccharomyces cerevisiae, embora apresente atributos ideais p
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38

Famelart, Marie-Hélène. "Étude du comportement de Brevibacterium linens ATCC 9175 en fermenteur : influence des conditions de culture sur la croissance et le métabolisme du lactate et des acides aminés." Paris 11, 1986. http://www.theses.fr/1986PA112002.

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L’étude du comportement de B. Linens en fermenteur est entreprise sur un milieu à base de L-lactate et d’une peptone caséique. La première partie présente la réalisation d’un plan d’expériences pour mettre en évidence l’effet de 3 facteurs, le pH (7,5-8,5), la température (20-30°C), et l’oxygène dissous (40-60% de la saturation), tous 3 régulés au cours de la culture, sur plusieurs paramètres de croissance et de métabolisme à des temps caractéristiques : temps de latence, temps de fin de phase exponentielle, temps de fin de phase de ralentissement et temps final. La valeur de ces temps, la den
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39

Komisarczuk, Sylvie. "Étude de l'influence du phosphore sur l'activité fermentaire, la protéosynthèse et les teneurs en ATP de contenus de rumen dans différents systèmes de culture continus." Paris 11, 1985. http://www.theses.fr/1985PA112314.

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Cette étude a pour but de déterminer le besoin en phosphore (P) pour les deux principaux aspects du métabolisme du rumen: digestion de l’aliment par les microorganismes et protéosynthèse microbienne. Une méthode d’extraction originale de l’ATP utilisant le DMSO a été mise au point. L’incorporation de l’azote lourd (15N) est utilisée pour quantifier la croissance microbienne des bactéries libres et associées aux particules solides. Le besoin en P pour la dégradation des composés pariétaux et la synthèse de l’ATP est supérieur au besoin de croissance microbienne estimé à 3,6g P/kg de matière org
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Cota, Olinta Leone. "Emiss?o de metano por bovinos nelore submetidos a diferentes planos nutricionais." UFVJM, 2013. http://acervo.ufvjm.edu.br:8080/jspui/handle/1/329.

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Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T13:50:21Z No. of bitstreams: 2 olinta_leone_cota.pdf: 459380 bytes, checksum: 9aaec33373245a4c60876b253a00f3dd (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5)<br>Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-05T13:50:49Z (GMT) No. of bitstreams: 2 olinta_leone_cota.pdf: 459380 bytes, checksum: 9aaec33373245a4c60876b253a00f3dd (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5)<br>Approved for entry into a
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Skaisgirienė, Audra. "Biologinio nuotekų valymo tyrimai naudojant fermentinius preparatus." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2006. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2006~D_20061006_112516-42253.

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Comprehensive investigation of the effect of polluting substances upon active sludge and of the opportunities for immobilisation of ferment preparations in the process of biological aerobic treatment of sewage. Refined mathematical models describing the population dynamics and identification of degradation rations based on the results of experimental investigations. The models obtained describe both the active sludge dynamics and the substrate biodegradation reasonably accurately, therefore, they can be applied to computations of sewage treatment in practice.
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42

Larsson, Johan. "High-throughput Fed-batch Production of Affibody® molecules in a novel Multi-fermentor system." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-3490.

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<p>The present Master thesis describes the development and optimization of a fed-batch process for production of recombinant proteins in Escherichia coli BL21(DE3) in a multi-fermentor system. The system consists of six 1-liter fermentors, capable of producing 500-1500 μg/mL with present protocol.</p><p>Response surface methodology (RSM) was used for multivariable optimization regarding cultivation time, pH, temperature and feed rate. Optimal protein expression conditions were found out to be 17.8 h cultivation time, 36.7 ºC, pH 6.8 and a feed rate corresponding to specific growth of 0.23 h-1,
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43

Hayes, William. "Ethanol production from glucose by Saccharomyces cerevisiae in an anaerobic gas-solid fluidised bed fermenter." Thesis, University of Lincoln, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263961.

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44

Loustaunau, Coline. "Modélisation de la croissance et de la production de thiolutine par Saccharothrix algeriensis en fermenteur batch." Phd thesis, Toulouse, INPT, 2015. http://oatao.univ-toulouse.fr/14711/1/loustaunau.pdf.

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Saccharothrix algeriensis est une bactérie filamenteuse capable de produire différentes molécules de la famille des dithiolopyrrolones présentant des activités antibiotiques et anticancéreuses. Ce travail porte sur l’analyse macroscopique et la modélisation du comportement dynamique de cette bactérie en vue de concevoir et d’optimiser un procédé de bioproduction de thiolutine. Les expériences menées en fermenteur de deux litres ont permis de décrire le comportement macroscopique de Sa. algeriensis. Sur substrat mixte (extrait de levure et glucose), la bactérie présente une croissance diauxique
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45

Gonzalez, Karen Vanessa. "Modélisation et commande robuste des systèmes biologiques : exemple de la production d’acide lactique en fermenteur industriel." Thesis, Châtenay-Malabry, Ecole centrale de Paris, 2015. http://www.theses.fr/2015ECAP0044/document.

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Cette thèse de doctorat porte sur l’optimisation du bioprocédé de production d’acide lactique à partir de la farine de blé. L'acide lactique s’avère en effet de plus en plus attractif pour la production de PLA (acide poly lactique), un bio polymère, d’autant plus que différentes matières premières peu coûteuses comme la farine de blé sont désormais utilisées comme sources de carbone pour sa production. Cette thèse comprend trois parties principales. Une première partie propose pour l’optimisation du procédé de transformation du blé un schéma innovant composé de trois étapes successives : une l
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46

Bellalou, Jacques. "Études des techniques de culture de Bordetella pertussis : optimisation des conditions de synthèses antigéniques en fermenteur." Compiègne, 1986. http://www.theses.fr/1986COMPI228.

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L’immunisation préventive des enfants, par l’utilisation de vaccins anti-coquelucheux bactériens demeure actuellement la seule mesure efficace démontrée contre la maladie. Ces vaccins sont constitués de corps microbiens entiers inactivés par chauffage à 56 °C ou par action conjuguée de la température et de l’action du formol. Mis au point empiriquement il en résulte pour le producteur le grave problème de la non-reproductibilité de lots de vaccins industriels d'efficacité équivalente auquel se superpose celui de leur toxicité résiduelle. Dans un premier temps, nous avons réalisé une étude syst
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47

FRANZAN, Bruna Caroline. "Ensaio de fermenta??o in vitro com aplica??o de in?culo fecal equino." Universidade Federal Rural do Rio de Janeiro, 2016. https://tede.ufrrj.br/jspui/handle/jspui/2189.

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Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2018-01-31T16:50:00Z No. of bitstreams: 1 2016 - Bruna Caroline Franzan.pdf: 2183556 bytes, checksum: 2e937393a56f483356ba48da8c23210a (MD5)<br>Made available in DSpace on 2018-01-31T16:50:00Z (GMT). No. of bitstreams: 1 2016 - Bruna Caroline Franzan.pdf: 2183556 bytes, checksum: 2e937393a56f483356ba48da8c23210a (MD5) Previous issue date: 2016-07-22<br>CAPES<br>This study aimed to evaluate the feces of horses as an inoculum source to apply to in vitro fermentation tests when roughage is used as the substrate. The design was completely r
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48

Fáklya, Bernadett. "Development of an industrial process for the production of aroma molecules by biocatalysis." Electronic Thesis or Diss., Aix-Marseille, 2021. http://www.theses.fr/2021AIXM0197.

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La 6-pentyl-alpha-pyrone (6PAP) est un métabolite fongique spécialisé, isolé pour la première fois dans les années 1970 à partir de cultures du champignon Trichoderma viride. Outre ses nombreuses propriétés biologiques (agent antifongique, hormone de croissance et inducteur de mécanismes de défense pour les plantes, etc.), ce composé possède des propriétés organoleptiques proches de celles de la massoia lactone et de la delta-décalactone, dont il est par ailleurs un précurseur potentiel. Son agréable odeur de noix de coco nuancée de noisette et de fève tonka en fait un arôme d’intérêt, utilisé
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Ducos, Jean-Paul. "Croissance et metabolisme primaire de suspensions heterotrophes de catharanthus roseus en fermenteur : importance de la phase gazeuse." Toulouse, INSA, 1986. http://www.theses.fr/1986ISAT0031.

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50

Amrane, Abdeltif. "Optimisation de la productivite d'un fermenteur effectant la conversion en acide lactique de permeat de lactoserum supplemente." Rennes 1, 1991. http://www.theses.fr/1991REN10084.

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L'objectif de ce travail etait le suivant: transformer le lactose du serum en acide lactique avec le meilleur rendement de conversion et la meilleure productivite volumique moyenne. Dans ce but, un modele decrivant les cinetiques de croissance et de production a d'abord ete developpe. Par rapport au modele tres repandu de luedeking-piret nous avons rajoute un terme de plus pour decrire la production non associee: ainsi le modele permet de bien ajuster les points experimentaux, sur la totalite du batch. Les parametres du modele sont aussi d'une grande aide pour l'evaluation des performances de
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