Rozprawy doktorskie na temat „Pathogenic microorganisms”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „Pathogenic microorganisms”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.
Grasso, Elizabeth Marie. "Nonthermal intervention strategies to minimize pathogenic foodborne microorganisms". The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1282076439.
Pełny tekst źródłaLiu, Yanling. "Electric DNA chips for determination of pathogenic microorganisms". Doctoral thesis, Stockholm : Bioteknologi, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9187.
Pełny tekst źródłaForster, Anthony Carlyle. "Self-cleavage of plant pathogenic RNAs". Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09PH/09phf7331.pdf.
Pełny tekst źródłaBowman, Melissa Lynne. "Biochemical characterization of Moraxella catarrhalis strains associated with Otitis media". Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/25397.
Pełny tekst źródłaSengupta, Atanu. "Detection of biological species by surface enhanced Raman scattering /". Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/8523.
Pełny tekst źródłaEvrendilek, Gulsun Akdemir. "Inactivation kinetics of pathogenic microorganisms by pulsed electric fields /". The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488204276531811.
Pełny tekst źródłaYan, Ling. "Phagocyte-pathogen interactions". [Lincoln, Neb. : University of Nebraska-Lincoln], 2004. http://www.unl.edu/libr/Dissertations/2004/YanDis.pdf.
Pełny tekst źródłaMabogo, Rudzani David Lesly. "The prevalence and survival of Campylobacter, Salmonella and Listeria species in poultry processing plant". Thesis, University of the Western Cape, 2004. http://etd.uwc.ac.za/index.php?module=etd&.
Pełny tekst źródłaCotter, Sheena C. "Trade-offs in insect disease resistance". Thesis, University of Stirling, 2002. http://hdl.handle.net/1893/26688.
Pełny tekst źródłaMak, Yun-lok Raymond. "Profile changes of putative periodontal pathogens after non-surgical periodontal treatment". Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B31954236.
Pełny tekst źródłaSuleman, Essa. "The role of pacC in Aspergillus flavus". Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/612.
Pełny tekst źródłaLeach, Mark Daniel. "A discrete, stochastic model and correction method for bacterial source tracking". Online access for everyone, 2007. http://www.dissertations.wsu.edu/Thesis/Spring2007/m_leach_050207.pdf.
Pełny tekst źródłaMak, Yun-lok Raymond, i 麥潤樂. "Profile changes of putative periodontal pathogens after non-surgical periodontal treatment". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31954236.
Pełny tekst źródłaChojnacki, Karen M. "Spatial variation in selection and multivariate estimates of local adaptation in a salamander-virus system". Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Spring2009/K_Chojnacki_042409.pdf.
Pełny tekst źródłaTitle from PDF title page (viewed on May 22, 2009). "School of Biological Sciences." Includes bibliographical references (p. 18-25).
Jayasekera, Arunodini Uthpalawanna. "Interactions between Phytophthora cinnamomi and Acacia pulchella : consequences on ecology and epidemiology of the pathogen /". Murdoch University Digital Theses Program, 2006. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20061129.134500.
Pełny tekst źródłaQuinonez-Diaz, Maria de Jesus. "Removal of pathogenic and indicator microorganisms from wastewater by natural systems". Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/282861.
Pełny tekst źródłaPerkins, Tracy. "The role of estuarine sediments as a reservoir for pathogenic microorganisms". Thesis, Bangor University, 2015. https://research.bangor.ac.uk/portal/en/theses/the-role-of-estuarine-sediments-as-a-reservoir-for-pathogenic-microorganisms(3683144c-e7f1-4753-8749-72f3e0378935).html.
Pełny tekst źródłaLamont, Yvonne. "The effects of UV-rich light pulses on pathogenic microorganisms in liquids". Thesis, University of Strathclyde, 2005. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21595.
Pełny tekst źródłaManshadi, Faezeh Dehghan. "Occurence of pathogenic and indicator microorganisms on produce irrigated with dairy wastewater". Diss., The University of Arizona, 2003. http://hdl.handle.net/10150/289980.
Pełny tekst źródłaSheldon, Candice Claire. "Hammerhead mediated self-cleavage of plant pathogenic RNAs /". Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phs544.pdf.
Pełny tekst źródłaEmerson, Ray Jenkins. "A nanoscale investigation of pathogenic microbial adhesion in biomaterial systems". Link to electronic dissertation, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-042706-075421/.
Pełny tekst źródłaTam, Man-wah. "Identification of bacterial pathogens by 16S ribosomal RNA gene sequencing". Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B31970783.
Pełny tekst źródłaPiotrowski, Jeffery Scott. "Physiology, Enzyme Production, and Zoospore Behavior of Balrachochytrium dendrobatidis, a Chytrid Pathogenic to Amphibians". Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/PiotrowskiJS2002.pdf.
Pełny tekst źródłaThomas, Theodore Seth. "Development of a capillary based helicobacter hepaticus biosensor". Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4572.
Pełny tekst źródłaThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (June 27, 2007) Includes bibliographical references.
Yeung, Siu Wai. "Development of electrochemistry-based DNA assay in a silicon/glass bio-device for point-of-care applications /". View abstract or full-text, 2008. http://library.ust.hk/cgi/db/thesis.pl?CENG%202008%20YEUNG.
Pełny tekst źródła譚文華 i Man-wah Tam. "Identification of bacterial pathogens by 16S ribosomal RNA gene sequencing". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B31970783.
Pełny tekst źródłaBittaye, Mustapha. "Comparative proteomic analyses of clinical Streptococcus pneumoniae isolates from invasive and non-invasive sites". Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=240152.
Pełny tekst źródłaBeatson, Scott. "Pseudomonas aeruginosa genomics and pathogenesis /". [St. Lucia, Qld.], 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe16848.pdf.
Pełny tekst źródłaVillamizar, Gallardo Raquel Amanda. "Biosensors based on carbon nanotube field effect transistors (cntfets) for detecting pathogenic microorganisms". Doctoral thesis, Universitat Rovira i Virgili, 2009. http://hdl.handle.net/10803/9037.
Pełny tekst źródłaIt is well known that food contaminated with bacteria can produce a number of foodborne diseases. As a consequence, thousands of euros are invested each year in medical treatments trying to keep the population healthy. There are more than 250 known foodborne diseases. For example, outbreaks of salmonellosis have increased in many countries in the last decades being Salmonella Infantis one of the most important etiological agents associated with this enteric disease. Moreover, due to the wide distribution of the microorganisms, they can also contaminate foods in the field as well as during the storage stage. In that sense, filamentous fungi are one of the etiological agents responsible for most post-harvest food spoilage producing quality losses and economic devaluation.
On the other hand, the invasive fungal infections due to yeast have risen considerably in recent years. Candidiasis is the so-called disease produced by Candida albicans. This is an opportunistic infection that affects immunocompromised patients requiring costly treatment with advanced medicine.
Several methods have been proposed so far to detect pathogenic microorganisms. Conventional culture is highly selective and sensitive but they also require several days to yield the results. To simplify and automate the identification of both bacteria and fungi rapid biochemical kits have been developed. Although the results obtained with these kits are comparable to the traditional biochemical tests they also need 1 or 2 days to obtain results. Enzyme-linked immunosorbent assays (ELISA) can be applied for the direct identification of pathogenic microorganisms in real samples. This immuno-based method has been widely used in both food and the medical sector with high sensitivity. Nevertheless, the main disadvantage of this method is that it can also be time-consuming because a pre-enrichment of the sample is often required in order to achieve low limits of detection. As a consequence, many researchers have addressed their efforts towards the development of alternative methods to allow the rapid detection of pathogens.
Molecular biology-based methods, specifically polymerase chain reaction (PCR) and real-time PCR are nowadays the most common tools used for pathogen detection. They are highly sensitive and allow the quantification of the target. In addition, microarray platforms of DNA have been developed in order to analyse hundreds of targets simultaneously. However, this technique is costly and reagent-consuming.
The introduction of biosensors has brought new alternatives in pathogenic detection. Biosensors are the most used tools in pathogenic detection after PCR, culture methods and ELISA. They provide rapid results after the sample has been taken. However, their real application lies in achieving selectivities and sensitivities comparable to the established methods and at low cost.
Since carbon nanotubes (CNTs) were discovered by Iijima, many papers have reported their unique electronic and optical properties which, together with their size, make these nanostructures interesting materials in the development of biosensing platforms. Their very high capacity for charge transfer between heterogeneous phases makes them suitable as components in electrochemical sensors. The electrical conductivity of the CNTs is highly sensitive to changes in their chemical environment and, as a result, they have been successfully applied in the study of molecular recognition processes.
An approach for the direct electrical detection of biomolecules integrates CNTs as transducer elements within a field-effect transistor (FET) configuration. The main advantages of this kind of configuration lies in that the conducting channel is usually located on the surface of the substrate and as a result, they are extremely sensitive to any change in the surrounding environment. Moreover, CNTFET devices can operate at room temperature and in ambient conditions.
At the beginning of this research (2006) electrochemical CNTFETs based on single walled carbon nanotubes had not been applied to detect bacteria or fungi. Only the interaction between CNTs and bacteria had been explored, but without sensing purposes. Therefore, this thesis reports the first CNTFET devices applied to the detection of pathogenic microorganisms. First, the background and the introduction containing the state of the art are presented covering relevant investigations made in the last years. Next, the main analytical methods are described. These descriptions involve detailed information of all procedures, analytical tools and materials used throughout this research work.
In the following chapters, the application of the CNTFETs for the determination of bacteria, yeast and moulds is presented throughout the scientific articles published along the development of the thesis. Briefly, the first device developed was applied to the detection of Salmonella Infantis in a simple matrix (0.85 % saline solution) and it was proven for first time, that this kind of sensor was able to detect, at least, 100 cfu/mL of the bacteria in just one hour with high selectivity. Subsequently, we enlarged the application field to other types of microorganisms: Candida albicans. In this study we improved not only the detection limit of the devices to 50 cfu/mL but also we proved the selectivity of the CNTFETs against possible interference that can be present in real samples like serum proteins. Finally, the devices were applied to the detection of the mould Aspegillus flavus in real samples. In this assay the response time was 30 minutes and a high sensitivity (10 µg of A. flavus / 25 g of rice) was obtained.
As the final chapters, general conclusions extracted from the overall work and annexes are reported. It can be stated that nanomaterials displaying extraordinary properties like carbon nanotubes can be combined with biological entities to obtain highly sensitive and selective biosensors able to detect bacteria, yeasts and moulds in a very short time. In future work, other performance parameters such as, long term stability, robustness and reusability must be studied further and contrasted with standard methods before thinking of the commercialization of the devices.
Los microorganismos están presentes en una gran variedad de orígenes, incluyendo alimentos, agua, animales, medio ambiente también como en el propio cuerpo humano. Estos pueden ser beneficiosos o perjudiciales. Los microorganismos perjudiciales reciben el nombre de patógenos y su detección es de gran importancia por razones de salud y seguridad.
Es bien conocido que los alimentos contaminados con bacterias pueden producir cierto número de enfermedades. Como consecuencia de esto, miles de euros se invierten cada año en tratamientos médicos para mantener la salud de la población. Existen más de 250 enfermedades transmitidas por alimentos. En las últimas décadas se ha incrementado por ejemplo, la incidencia de brotes de salmonelosis en muchos países, siendo Salmonella Infantis uno de los agentes etiológicos más importantes asociados con la producción de esta enfermedad entérica. Debido a la amplia distribución de los microorganismos, estos pueden llegar también a contaminar alimentos durante su cultivo como durante la fase de almacenamiento. En este sentido, los hongos filamentosos son en gran parte los agentes etiológicos responsables del deterioro de alimentos después de la cosecha produciendo pérdidas en la calidad y devaluación económica.
Por otra parte, las infecciones fúngicas invasivas producidas por levaduras han aumentado considerablemente en los últimos años. Candidiasis, es la enfermedad producida por Candida albicans. Esta es una de las infecciones más comunes que afectan pacientes inmunocomprometidos requiriendo tratamientos de elevado coste.
Se han propuesto varios métodos hasta la fecha para la detección de microorganismos patógenos. El cultivo es el método de referencia utilizado para la detección y cuantificación de bacterias. Tiene la ventaja de ser altamente selectivo y sensible pero tiene el inconveniente de requerir varios días para obtener un resultado. Para simplificar y automatizar la identificación de bacterias y hongos se han desarrollado kits bioquímicos rápidos. Aunque los resultados obtenidos usando esta clase de kits son comparables a las pruebas bioquímicas tradicionales, también 1 o 2 días son requeridos para la obtención de resultados. El enzimoinmunoensayo ("Enzyme Linked Immunosorbent Assay", ELISA) es un método immunológico de gran sensibilidad que se utiliza ampliamente para detectar y cuantificar microorganismos patógenos, tanto en el sector médico como en el alimentario. Sin embargo, su principal desventaja es que a veces el tiempo de análisis puede aumentar considerablemente, específicamente cuando se realizan etapas de pre-enriquecimiento de la muestra para disminuir el límite de detección. Como consecuencia, muchos investigadores han dirigido sus esfuerzos hacia el desarrollo de métodos más rápidos.
Los métodos basados en el uso de la biología molecular, específicamente la reacción en cadena de la polimerasa (PCR) y la PCR en tiempo real, son hoy en día las herramientas más comúnmente usadas para la detección de patógenos. Estas técnicas son altamente sensibles y permiten la cuantificación del patógeno. Adicionalmente, se han desarrollado chips con plataformas de DNA para analizar cientos de patógenos simultáneamente. Sin embargo, esta técnica es costosa y requiere el uso de muchos reactivos.
La introducción de los biosensores ha contribuído a generar nuevas alternativas para la detección de patógenos. Los biosensores son las herramientas más usadas en la detección de patógenos después de la PCR, los métodos convencionales y el ELISA. Tienen la ventaja de proporcionar respuestas rápidas entre la toma de muestra y la obtención de los resultados. No obstante, el reto para su aplicación en muestras reales radica en alcanzar selectividades y sensibilidades comparables a los métodos convencionales ya establecidos y a un costo económico reducido.
Desde que Iijima descubrió los nanotubos de carbono (CNTs) se han publicado numerosos trabajos sobre sus excelentes propiedades electrónicas y ópticas, las cuales, en conjunción con su tamaño, hacen de estas nanoestructuras materiales interesantes en el desarrollo de plataformas de biodetección. Los CNTs presentan una gran capacidad de transferencia de carga entre estructuras heterogéneas. Ello les confiere una gran utilidad en la elaboración de sensores de tipo electroquímico. Su conductividad eléctrica varía de forma muy acusada con cambios en su ambiente químico y, como resultado, se han aplicado con éxito en el estudio de procesos de reconocimiento molecular.
Una metodología para la detección directa de biomoléculas integra los CNTs como elementos transductores dentro de una configuración de transistor de efecto campo (FET). Las principales ventajas de esta clase de configuraciones radican en que el canal conductor se localiza sobre la superficie del substrato y, como resultado, es altamente sensible a cualquier cambio en el medio ambiente. Además, los CNTFETs pueden operar a temperatura y, humedad ambientales.
Al inicio de esta tesis (2006), todavía no se habían aplicado los CNTFETs basados en nanotubos de carbono monocapa a la detección de bacterias y hongos. Sólo se había estudiado la interacción entre los CNTs y bacterias, pero sin el objetivo de detección. Por tanto, esta tesis aporta los primeros CNTFETs aplicados a la detección de microorganismos patógenos. En primer lugar, se presentan los antecedentes y la introducción, donde se realiza una revisión crítica y actualizada de los métodos e investigaciones más relevantes para detectar microorganismos patógenos. Posteriormente, se incluye un capítulo con la información detallada de todos los procedimientos experimentales, herramientas analíticas y materiales utilizados a lo largo del trabajo de investigación.
En los siguientes capítulos, se presenta la aplicación de CNTFETs en la determinación de bacterias, mohos y levaduras mediante artículos científicos publicados a lo largo del desarrollo de la tesis. Brevemente, el primer dispositivo desarrollado se aplicó a la detección de Salmonella Infantis en una matriz simple (solución salina 0.85 %) y se comprobó por primera vez que esta clase de sensores eran capaces de detectar al menos 100 ufc/mL de la bacteria en tan solo una hora con alta selectividad. Seguidamente, se amplió el campo de aplicación a otro tipo de microorganismo, Candida albicans. En este estudio, se mejoró no sólo el límite de detección de los dispositivos a 50 ufc/mL sino que también se mejoró la selectividad de los CNTFETs frente a posibles interferentes que pueden estar presentes en muestras reales, tales como proteínas séricas. Finalmente, se aplicaron los dispositivos a la detección del moho Aspergillus flavus en muestras reales. En este ensayo, el tiempo de respuesta fue de 30 minutos y se obtuvo una buena sensiblidad (10 µg de A. flavus / 25 g de arroz).
Como parte final de la tesis, se presentan las conclusiones generales extraídas a lo largo del trabajo completo junto con los anexos. Puede concluirse que, gracias a las propiedades únicas de los nanotubos de carbono, dichos nanomateriales pueden combinarse con entidades biológicas (como los anticuerpos) para obtener biosensores altamente sensibles y selectivos capaces de detectar bacterias, levaduras y mohos en un tiempo de análisis muy reducido. Como trabajo futuro, se deberán estudiar otros parámetros de calidad de los dispositivos tales como la estabilidad a lo largo del tiempo, la robustez o su reutilización con el fin de contrastarlos con los métodos estándar antes de poder iniciar la comercialización de este tipo de sensores.
Pastells, Díez Carme. "Noves aproximacions per a la detecció de microorganismes patògens". Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/396321.
Pełny tekst źródłaThis thesis has focused on the development of immunochemical new tools for the diagnosis of infectious diseases with the aim of increasing the efficiency of current diagnostic methods. Specifically, this work has focused on the development of immunochemical techniques for the detection of Staphylococcus aureus and Pseudomonas aeruginosa in biological samples. The strategy consisted in selecting specific targets for each of the microorganisms and, specific polyclonal antibodies were developed through rational design of immunization haptens. The antibodies were evaluated by ELISA tests (enzyme-linked immunosorbent assay) and later implemented in microplate ELISA immunoassays and fluorescent microarrays for the analysis of biological samples (bacteria in culture medium) and clinical samples of respiratory origin (sputum and broncoalveolars lavages and broncoaspirats). The immunoassays obtained for both bacteria are capable of detecting the selected targets with detection levels useful for its implementation in the diagnosis field, offering a promising alternative for diagnosing diseases caused by these bacteria. As a result of the research carried out two patents have been generated (PCT/ES2014/070161 and P201530780), which are under negotiation with companies in the field of diagnosis. It has published a review article that describes the state of the art regarding the potential of nanobiotechnology in the diagnosis of pathogenic microorganisms, an original research paper, which was published in the Analytica Chimica Acta journal describing the work regarding the immunochemistry detection of S. aureus, and a third article that is under evaluation by the reviewers and editors of the Analytical Chemistry journal and reporting research conducted regarding the development of immunochemistry tools to diagnose diseases caused by P. aeruginosa.
Campbell, Gossett A. Mutharasan Rajakannu. "Detection and quantification of pathogens, proteins, and molecules using piezoelectric-excited millimeter-sized cantilever (PEMC) sensors /". Philadelphia, Pa. : Drexel University, 2006. http://dspace.library.drexel.edu/handle/1860/737.
Pełny tekst źródłaKleyi, Phumelele Eldridge. "The development of functionalized electrospun nanofibers for the control of pathogenic microorganisms in water". Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1013134.
Pełny tekst źródłaKhalaphallah, Rafat. "Greywater treatment for reuse by slow sand filtration : study of pathogenic microorganisms and phage survival". Phd thesis, Ecole des Mines de Nantes, 2012. http://tel.archives-ouvertes.fr/tel-00735857.
Pełny tekst źródłaShefet, Sarid M. "Development of nisin-based treatments to control pathogenic and spoilage microorganisms associated with poultry products". NCSU, 1997. http://www.lib.ncsu.edu/theses/available/etd-19970911-110240.
Pełny tekst źródłaSHEFET, SARID M.
More than 10% of the U.S. population experience at least one incident of foodborne disease annually (Todd, 1989). From 1983 to 1987, infections contribute to at least 1,000 deaths per year in the United States.
Poultry products are considered to be the single most important food source of contamination rates for live chickens can vary from about 13% to 80% of the flock and are invariably higher after processing (Mead, 1976; Roberts, 1988; Budnik, 1990). In 1992, the U.S. was ranked first in the world in poultry consumption with 94.8 pounds per capita, followed by Israel with 83.7 pounds, and Hong Kong with 79.3 pounds (Brown, 1993). In 1993 over 27.6 billion pounds of ready-to-cook poultry products were produced in the U.S. Per capita consumption of poultry products has increased substantially over the last two decades relative to other meat products; therefore, exposure of the consumer to poultry product-associated microorganisms including pathogens has correspondingly increased and no doubt contributes to these foodborne disease statistics.
Besides bacterial pathogens, poultry products are also contaminated with a variety of spoilage microorganisms which can contribute to the development of strong off odors and/or slime formation and shortened product shelf life. These organisms, however, are not generally associated with human illness. A reduction in the population of these microorganisms or suppression of their growth often results in increased product shelf life and greater consumer acceptability. Some reports have estimated that the presence of pathogenic and spoilage microorganisms on poultry may cost the American public over two billion dollars annually in foodborne disease-related expenditures and spoiled products (Roberts, 1988; Todd, 1989).
The bacteriocin nisin was approved by the United States Food and Drug Administration in 1988 as a GRAS (general recognized as safe) substance for use in pasteurized cheese spreads to control outgrowth and toxin production by Clostridium botulinum. Blackburn when combined with chelating agents such as disodium ethylenediamine tetraacetate (EDTA) and citrate. Perturbation of the outer membrane of gram-negative bacteria via chelation of divalent cations located in the lipopolysaccharide layer is believed to sensitize the cells by providing access to the cytoplasmic membrane where nisin-mediated inactivation occurs.
The initial focus of this study was to optimize the inhibitory activity of nisin against a NAR skin population, as observed with broiler drumstick skin, were detected following treatment with the four nisin-containing treatments.
Experiments were also conducted to determine the efficacy of the nisin-based treatments against NAR-infected drumstick skin under varying exposure times and concentrations of nisin. Exposure time significantly influenced the lethality of the treatments and depending on the treatment, nisin concentrations could be reduced from 100 µg/ml to 50 or 25 µg/ml without loss of significant biocidal activity. In other studies, the refrigerated shelf life of broiler drumsticks was extended by 1.5 to 3 days following immersion for 30 minutes in one of the optimized nisin-containing treatments in comparison to drumsticks immersed in distilled, deionized water.
These findings indicate that treatments containing nisin and varying concentrations of chelating agents and/or surfactant at an acidic pH are capable of significantly inhibiting the population of -free poultry products, the identification and implementation of effective preservation methods could result in several long term benefits including greater public confidence in poultry products, an increased market potential, and increased profits for the poultry industry.
Al-Yousef, Sulaiman Ali. "Bismuth : effects on pathogenic microorganisms and its potential impact on microbial processes in the environment". Thesis, University of Sheffield, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246923.
Pełny tekst źródłaShefet, Sarid M. "Development of nisin-based treatments to control pathogenic and spoilage microorganisms associated with poultry products". Raleigh, NC : North Carolina State University, 1994. http://www.lib.ncsu.edu/etd/public/etd-525111989752611/etd.pdf.
Pełny tekst źródłaHaznedaroğlu, Berat Zeki. "Transport and pathogenicity of Salmonella enterica subspecies in groundwater in vitro, in vivo, and in silico /". Diss., [Riverside, Calif.] : University of California, Riverside, 2010. http://proquest.umi.com/pqdweb?index=0&did=2019837071&SrchMode=2&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1274199906&clientId=48051.
Pełny tekst źródłaIncludes abstract. Available via ProQuest Digital Dissertations. Title from first page of PDF file (viewed May 18, 2010). Includes bibliographical references. Also issued in print.
Aberton, Michael J., i lswan@deakin edu au. "The use of phosphite as a control for Phytophthora cinnamomi in southeastern Victorian vegetation communities". Deakin University. School of Biological and Chemical Sciences, 2005. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20060921.150649.
Pełny tekst źródłaMuirhead, Richard William, i n/a. "The association of Escherichia coli and soil particles in overland flow". University of Otago. Department of Food Science, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070306.155953.
Pełny tekst źródłaFerguson, Christobel Margaret Biotechnology & Biomolecular Science UNSW. "Deterministic model of microbial sources, fate and transport: a quantitative tool for pathogen catchment budgeting". Awarded by:University of New South Wales. Biotechnology and Biomolecular Science, 2005. http://handle.unsw.edu.au/1959.4/23451.
Pełny tekst źródłaHenley-Smith, Cynthia Joan. "Identification of bioactive compounds of a South African plant extract for combating potentially pathogenic oral microorganisms". Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/31149.
Pełny tekst źródłaDissertation (MSc)--University of Pretoria, 2012.
Plant Science
MSc
Unrestricted
Daniel, Rosalie, i mikewood@deakin edu au. "Aspects of the interaction between Xanthorrhoea australis and Phytophthora cinnamomi in south-western Victoria, Australia". Deakin University. School of Biological and Chemical Sciences, 2002. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20051201.144848.
Pełny tekst źródłaNgesa, Anna Adhiambo. "The management of blood and body fluids in a Kenyan university hospital : a nursing perspective". Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/884.
Pełny tekst źródłaFuqua, Andrew. "Characterization of the Broad-spectrum Inhibitory Capability of Alcaligenes faecalis and A. viscolactis against Potential Pathogenic Microorganisms". Digital Commons @ East Tennessee State University, 2020. https://dc.etsu.edu/honors/546.
Pełny tekst źródłaMcKenzie, Karen. "Inactivation of foodborne pathogenic and spoilage microorganisms by 405 nm light : an investigation into potential decontamination applications". Thesis, University of Strathclyde, 2014. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25656.
Pełny tekst źródłaKim, Hyun Jung. "The effect of extracellular and surface macromolecules on the deposition of pathogenic microorganisms in saturated porous media". Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?did=1974753331&sid=1&Fmt=7&clientId=48051&RQT=309&VName=PQD.
Pełny tekst źródłaEtinosa, Omoruyi Beauty. "Immunological and molecular characterization of Cryptosporidium species in HIV-Positive and HIV-Negative diarrhoea patients in the Nkonkobe Municipality of the Eastern Cape Province of South Africa: a pilot study". Thesis, University of Fort Hare, 2010. http://hdl.handle.net/10353/392.
Pełny tekst źródłaAdeyemi, Oluwatosin Oluwakemi. "Comparative in-vitro activities of trimethoprimsulfamethoxazole and the new fluoroquinolones against confirmed extended spectrum beta-lactamase producing Stenotrophomonas maltophilia in Nkonkobe Municipality, Eastern Cape environment". Thesis, University of Fort Hare, 2012. http://hdl.handle.net/10353/d1007576.
Pełny tekst źródłaPierce, Carrie. "High throughput mass spectrometry for microbial identification". Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43741.
Pełny tekst źródłaWang, Qin Shannon Curtis. "Self-assembled monolayers as platform for biosensors". Auburn, Ala., 2005. http://repo.lib.auburn.edu/2005%20Fall/Thesis/WANG_QIN_39.pdf.
Pełny tekst źródła