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Tesis sobre el tema "Fermentation"

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Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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1

Potgieter, Thomas. "Retention of fermentation biomass for extended L-Lysine fermentations." Doctoral thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/8786.

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Includes bibliographical references.<br>In this thesis it was demonstrated that the current L-lysine fermentation technology can be enhanced by continuously withdrawing spent medium while recycling the biomass in the culture suspension to the bioreactor. The biomass in the reactor outlet stream is separated from the spent medium using cross-flow filtration. The objective of this thesis was to study, understand, model and optimise the performance of the L-Lysine fermentation with biomass retention using cross flow filtration. Following a review of the factors affecting cross-flow filtration and
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2

Simpson, Kirsten Louise. "Lactobacilli from Scotch whisky fermentations : characterisation and effects on the fermentation." Thesis, Heriot-Watt University, 2001. http://hdl.handle.net/10399/466.

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3

Bates, J. A. "Factors affecting fermentation." Thesis, University of Reading, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234391.

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4

Minier, Michel. "Fermentation acetonobutylique par couplage a des procedes membranaires et fermentation extractive." Toulouse 3, 1987. http://www.theses.fr/1987TOU30290.

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5

Minier, Michel. "Fermentation acétonobutylique par couplage à des procédés membranaires et fermentation extractive." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37608061h.

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6

Turon, Violette. "Coupling dark fermentation with microalgal heterotrophy : influence of fermentation metabolites mixtures, light, temperature and fermentation bacteria on microalgae growth." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS201/document.

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La production de microalgues en hétérotrophie présente plusieurs avantages pour la production de biocarburants par rapport à la production autotrophe, comme une productivité plus importante en termes de biomasse et de lipides. Cependant, le développement industriel de ce procédé est limité par les coûts de productions associés au substrat organique (i.e. glucose) et à ceux liés à la stérilisation des fermenteurs. Les effluents de fermentation sombre, composés principalement d’acétate et de butyrate, pourraient être utilisés comme milieux de culture peu onéreux pour la culture hétérotrophe ou m
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7

Munro, D. Ross. "Biphasic fermentation of xenobiotics." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20681.pdf.

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8

Kim, Eun-ki. "Vigorous stationary phase fermentation." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/20710.

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9

Bagheri, Bahareh. "Comparative analysis of fermentative yeasts during spontaneous fermentation of grapes from different management systems." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86696.

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Thesis (MSc)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The microorganisms associated with grape berry surface can be influenced by numerous factors such as agronomic parameters. Hence, the focus of this study was comparison between three agronomic farming systems to evaluate their impact on yeast diversity. In addition, the dynamics of the yeast population throughout wine alcoholic fermentation were monitored. Three vineyards (conventional, biodynamic and integrated) were chosen and the experiment was carried out during the 2012 and 2013 vintages. A total of 600 yeast isolates inclu
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10

Tognete, Milena Heloisa Pozenatto Bicudo [UNESP]. "A influência da matéria-prima e diferentes cepas de levedura no rendimento fermentativo de um processo de obtenção de etanol." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/150032.

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Submitted by MILENA HELOISA POZENATTO BICUDO TOGNETE null (mibicudo28@gmail.com) on 2017-03-28T20:38:07Z No. of bitstreams: 1 Dissertacao versao final.pdf: 1702848 bytes, checksum: c8c7d8d8e47d1bf45f97875ac83a2798 (MD5)<br>Approved for entry into archive by Luiz Galeffi (luizgaleffi@gmail.com) on 2017-03-30T17:07:32Z (GMT) No. of bitstreams: 1 tognete_mhpb_me_sjrp.pdf: 1702848 bytes, checksum: c8c7d8d8e47d1bf45f97875ac83a2798 (MD5)<br>Made available in DSpace on 2017-03-30T17:07:32Z (GMT). No. of bitstreams: 1 tognete_mhpb_me_sjrp.pdf: 1702848 bytes, checksum: c8c7d8d8e47d1bf45f97875ac83a2
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11

Ulbrik, Teresa Yolanda Lustosa. "Cellulolytic fermentation by clostridium thermocellum." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/10027.

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12

Kisaalita, William Ssempa. "Anaerobic fermentation of whey : acidogenesis." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27362.

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Based on the initial exploratory results of single-phase (acidogenesis and methanogenesis takes place in one vessel) whey biomethanation studies, a two-phase (acidogenesis and methanogenesis takes place in two separated serial vessels) biomethanation process was found to be more suitable for dealing with the current whey utilisation and/or disposal problem. Acidogenesis was found to be less understood in comparison to methanogenesis and therefore acidogenesis became the central problem of this thesis. Given that 90% of the five-day biochemical oxygen demand in whey is due to lactose, continu
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13

Graves, Tara. "Yeast and corn mash fermentation." Thesis, Heriot-Watt University, 2007. http://hdl.handle.net/10399/2099.

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14

Carillo-Ureta, Gabriel Eduardo. "Optimal control of fermentation processes." Thesis, City University London, 2003. http://openaccess.city.ac.uk/7584/.

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The general purpose of this thesis is to focus on a particular industrial process (from the beer industry) which serves as a guidance example for optimal control using different algorithms/methods. At the same time, the aim is to demonstrate the capabilities/features of MATLAB and SIMULINK as tools used in programming algorithms and simulation for optimal control of non linear systems. The thesis shows how to approach an optimisation problem with different techniques and to compare them on the same basis. The main reasons for carrying out research on a beer fermentation process can be summaris
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15

McAleavey, Gervase. "Mass transfer studies in fermentation." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356899.

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16

Ahmad, Mohammad Najeeb. "Mathematical modelling of fermentation systems." Thesis, Queen's University Belfast, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296797.

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17

Landon, Robert Stephen. "Optimisation of the dextran fermentation." Thesis, University of Manchester, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333270.

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18

Teixeira, Miguel Monteiro. "Mixotrophic fermentation for butanol production." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22401.

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Mestrado em Biotecnologia<br>The current economy is still dominated by the fossil-based chemical industry that represents a nefarious contribution to the environment. To avoid the permanence of this industry, the necessity to optimize fermentations to cost-competitive processes started to arise. It is known that heterotrophic organisms can transform organic carbon into fermentation products with great economic interest. However, for most fermentations where sugars are used as carbon source, over one-third of the sugar carbon is lost to CO2. The CO2 evolves from the Embden-Meyerhof-Parnas (EMP)
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19

Zanganas, Panayiotis. "Fermentation methods for dextransucrase production." Thesis, Aston University, 1993. http://publications.aston.ac.uk/9693/.

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Several fermentation methods for the production of the enzyme dextransucrase have been employed. The theoretical aspects of these fermentation techniques have been given in the early chapters of this thesis together with a brief overview of enzyme biotechnology. A literature survey on cell recycle fermentation has been carried out followed by a survey report on dextransucrase production, purification and the reaction mechanism of dextran biosynthesis. The various experimental apparatus as employed in this research are described in detail. In particular, emphasis has been given to the developme
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20

Tijjani-Oshungboye, Kubura. "Microalgae biomass as fermentation feedstock." Thesis, Rhodes University, 2012. http://hdl.handle.net/10962/d1006168.

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The search for alternative energy is as a result of pollution generated by the utilization of fossil fuel. Bearing in mind the increase in demand which exceeds supply, alternative energy must reduce the carbon foot print in order to relieve use of fossil fuels. Biogas generation from wastes is an old technology that has been in existence for decades. This same concept was behind the development of the integrated algae ponding system (IAPS), where the use of microalgae biomass is adopted for waste water treatment and, anaerobic digestion which is a component of the IAPS, simultaneously generate
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21

Vendramin, Veronica. "Whey valorisation by microbial fermentation." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3426766.

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Streptococcus thermophilus is a thermophilic lactic acid bacterium (LAB) of major importance in the dairy industry. This species is widely used as starter culture to produce fermented dairy products. It has been awarded the status of GRAS (Generally Recognized as Safe) in the USA and a Qualified Presumption of Safety (QPS) status in the European Union, due to its long history of safe use in food production. Increasing the number of starter available to producers by discovering new strains with desirable characters is important not only for identifying new properties that may better suited the
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22

Zhao, Renyong. "Impact of sorghum proteins on ethanol fermentation and investigation of novel methods to evaluate fermentation quality." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1036.

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23

Feng, Xin-Mei. "Microbial dynamics during barley tempeh fermentation /." Uppsala : Swedish University of Agricultural Sciences, 2006. http://diss-epsilon.slu.se/archive/00001186/01/xmffin0-online.pdf.

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24

Halidi, Ben Saida Ali. "Fermentation d'acides gras par Penicillium roqueforti." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq33669.pdf.

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25

Radocaj, Olgica. "Ethanol fermentation in a membrane bioreactor." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0015/MQ45840.pdf.

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26

Chen, Wen-Hsing. "Biological hydrogen production by anaerobic fermentation." [Ames, Iowa : Iowa State University], 2006.

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27

Feng, Xinmei. "Microbial dynamics during barley tempeh fermentation /." Uppsala : Dept. of Microbiology, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200659.pdf.

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28

Sotiriou, George K. "Effects of mixing on fermentation kinetics." Ohio : Ohio University, 1987. http://www.ohiolink.edu/etd/view.cgi?ohiou1183061483.

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29

Kuhlmann, C. "On the controllability of fermentation systems." Thesis, University College London (University of London), 1998. http://discovery.ucl.ac.uk/1350023/.

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This thesis concerns the controllability of fermentation processes. Fermentation processes are often described by unstructured process models. A control system can be used to reduce the effect of the uncertainties and disturbances. A process is called controllable if a control system satisfying suitably defined control objectives can be found. Controllability measures based on linear process models are identified. The idealised control objective for perfect control allows fast evaluation of the controllability measures. These measures are applied to compare different designs of a continuous fe
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30

陳臻 and Chun Jade Chan. "Proteolytic enzyme in soy sauce fermentation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31223977.

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31

Minabe, Masaharu. "The lipids of post-fermentation yeast." Thesis, Heriot-Watt University, 1992. http://hdl.handle.net/10399/1487.

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32

Burke, Frances Mary. "Fermentation development of Streptomyces thermonitrificans ISP5579." Thesis, University of Glasgow, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245820.

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33

Fashina, Adekunle. "Fermentation regulation for maximum downstream efficiency." Thesis, University of Newcastle Upon Tyne, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405340.

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34

De, Silva L. L. S. S. K. "Lactic acid fermentation of shrimp waste." Thesis, Loughborough University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314517.

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35

Wilson, James Samuel. "Process intensification of hybridoma cell fermentation." Thesis, University of Edinburgh, 1992. http://hdl.handle.net/1842/12155.

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Monoclonal antibodies can be produced in culture fluid by the fermentation of specificially selected hybridoma cells. Hybridoma cells exhibit suspension type fermentation characteristics and therefore the simplest method for large scale fermentation is that of the stirred tank fermenter. However, such is the growing demand for monoclonal antibodies, methods for increasing the production capacity of a commercial process are being developed. This study examines some of the current process intensification methods in relation to an established production facility. As well as examining the actual p
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36

Brooks, Steven. "A glucose sensor for fermentation monitoring." Thesis, Cranfield University, 1987. http://dspace.lib.cranfield.ac.uk/handle/1826/10284.

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The evaluation, analysis and development of an oxygen-insensitive amperometric glucose biosensor and its application in microbial batch culture are described. The biosensor consisted of a graphite foil electrode modified with glucose oxidase and 1,1'-dimethylferrocene, and operated via mediated electron transfer from the enzyme to the electrode. Initial evaluations illustrated several operating characteristics which would be expected to cause problems in continuous monitoring applications, most notably sensor instability and a progressive increase in response time. The main underlying causes o
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37

Stavrinides, Alexander James. "Isothermal microwave biology : catalysis and fermentation." Thesis, Liverpool John Moores University, 2012. http://researchonline.ljmu.ac.uk/6110/.

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This thesis looks directly into the controversial subject of the microwave field effect by the production of a versatile prototype isothermal microwave reactor for the investigation of enzymatic and microbiological reactions. The observed results from the prototype reactor and experiments conducted conclude that there is a nonthermal, nonlinear response between the exposure microwave power and rate and yield of cellulose saccharification. The nature of the nonthermal response is controversial and may be dependent on the definition of "nonthermal,' leading to ambiguity of exact mechanism. Enzym
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38

Saveant, Nathalie. "Étude microcalorimétrique de la fermentation homolactique." Compiègne, 1993. http://www.theses.fr/1993COMPD662.

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La technique calorimétrique a été utilisée pour l'étude de la fermentation lactique de trois souches de bactéries homofermentaires : Lactobacillus helveticus, Lactobacillus bulgaricus et Streptococcus thermophilus. On a pu dans un premier temps décrire par cette méthode les étapes physiologiques de la croissance d'une souche (L. Helveticus), puis évaluer les transferts énergétiques à partir des données expérimentales et déterminer les caractéristiques thermochimiques de cette souche. L'étude calorimétrique de l'influence de la concentration initiale en substrat montre que cette bactérie n'est
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39

Lafforgue, Christine. "Fermentation alcoolique en bioreacteur a membranes." Toulouse, INSA, 1988. http://www.theses.fr/1988ISAT0024.

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Etude de la fermentation alcoolique continue couplee a la micropropagation tangentielle. La modelisation du procede permet de realiser des simulations previsionnelles et d'estimer le dimensionnement d'une installation pour une production determinee. L'application de cette technique a l'elaboration de boissons fermentees est envisagee
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40

Loveland, Jennifer. "Hindgut fermentation in ruminating Holstein calves." Diss., Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/49826.

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The effects of quantity of dietary starch and type of dietary protein on hindgut fermentation were evaluated. Thirty—two Holstein bull calves were fed diets containing variable amounts of orchardgrass hay and a grain mixture. The amount of starch and types of protein were: [L1] low starch, soybean meal (SBM); [L2] low starch, fishmeal plus dried brewers' grains (FBG); [Hl] high starch and SBM; [H2] high starch, FBG. The percentages of acid detergent fiber (ADF) and crude protein were: [L1] 19.2%, 15.1%; [L2] 18.0%, 15.6%; [H1] 9.5%, 14.9%; [H2] 9.6%, 15.4%. After calves were fed the di
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41

Trudova, Evgenia. "Xanthan Gum : Fermentation of Xanthomonas Campestris." Thesis, Malmö universitet, Fakulteten för hälsa och samhälle (HS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-18694.

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Xanthan gum is one of the most common thickening agents used worldwide.The industrial manufacturing process of xanthan gum uses cheap, carbohydrate rich mediums for fermentation of the bacterium Xanthomonas campestris. The objective of this study was to compare different fermentation mediums based on grain powder for small scale fermentation of Xanthomonas campestris. Culture mediums containing wheat or cornstarch and the less allergen prone medium containing potato starch and oat flour were investigated. All four fermentation mediums of this study showed signs of thickening, indicating the pr
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42

Sotiriou, George. "Effects of mixing on fermentation kinetics." Ohio University / OhioLINK, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1183061483.

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43

Shu, Chin-Hang. "Multiphase bioreactors for recombinant yeast fermentation /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487780865408922.

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44

Abdul, Manan Musaalbakri. "Design aspects of solid state fermentation." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/design-aspects-of-solid-state-fermentation(d64ea506-85ee-424f-9bca-531488e3e3c7).html.

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Solid state fermentation (SSF) refers to the microbial fermentation, which takes place in the absence or near absence of free water, thus being close to the natural environment to which the selected microorganisms, especially fungi, are naturally adapted. The current status of SSF research globally was discussed in terms of articles publication. This was followed by discussion of the advantages of SSF and the reason for interest in SSF as a notable bioprocessing technology to be investigated and compared to submerged fermentation (SmF) for the production of various added-value products. SSF al
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45

Delorme, Christine. "Fermentation alcoolique en bioréacteur à membranes." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376148640.

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46

Chan, Chun Jade. "Proteolytic enzyme in soy sauce fermentation." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk:8888/cgi-bin/hkuto%5Ftoc%5Fpdf?B22713384.

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47

Lehle, Fredric R., and Omer K. Ahmed. "Fermentation in Cotton (Gossypium hirsutum) Seeds." College of Agriculture, University of Arizona (Tucson, AZ), 1988. http://hdl.handle.net/10150/204520.

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Ethanol and acetaldehyde production by cotton seeds subjected to anoxic stress imposed by CO₂ or N₂ gas was quantified during the imbibition phase. Fermentation capacity was low in dry seeds and quickly increased during the first few hours of imbibition. In hydrated seeds, ethanol and acetaldehyde excretion following anoxic stress followed a linear trend in time. Ethanol excretion exceeded that of acetaldehyde by an order of magnitude. Similar rates of production were observed whether anoxic was imposed by either CO₂ or N₂ gas. Excreted ethanol and acetaldehyde were rapidly metabolized followi
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48

Castro, Martinez Claudia Strehaiano Pierre Lonvaud Aline. "Brettanomyces bruxellensis." Toulouse : INP Toulouse, 2007. http://ethesis.inp-toulouse.fr/archive/00000511.

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49

Boudreau, Thomas F. IV. "The Effect of Fungicide Residues and Yeast Assimilable Nitrogen on Fermentation Kinetics and H2S Production during Cider Fermentation." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81452.

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The Virginia cider industry has grown rapidly in the past decade, and demands research-based recommendations for cider fermentation. This study evaluated relationships between the unique chemistry of apples and production of hydrogen sulfide (H2S) in cider fermentations. Yeast assimilable nitrogen (YAN) concentration and composition and residual fungicides influence H2S production by yeast during fermentation, but these factors have to date only been studied in wine grape fermentations. This study surveyed 12 Virginia-grown apple cultivars and found that the majority were severely deficient in
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50

Prevot, Vincent. "Comparaison de la production de complexes enzymatiques par fermentation en milieu solide et par fermentation en milieu liquide." Thesis, Reims, 2013. http://www.theses.fr/2013REIMS009/document.

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La fermentation en milieu solide est un bioprocédé pouvant éventuellement être utilisé comme technologie de rupture pour diminuer le coût des biocatalyseurs utilisés dans la conversion de biomasse lignocellulosique comme le son de blé. La première partie de ces travaux de recherche a donc étudié le potentiel de cette technologie par rapport à celle de fermentation en milieu submergé lors d'une comparaison en application. Plusieurs tests de saccharification ont ainsi été réalisés sur différentes matières premières (cellulose, son de blé) et ont permis de montrer l'avantage différentiateur des b
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