Browsing Microbiological Sciences Masters Theses by Title
Now showing items 2-21 of 29
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Assessment of Vacuum Steam Pasteurization to Improve Safety and Quality of Low Moisture Foods
(North Dakota State University, 2016)Low moisture foods such as grains, seeds, spices and flour are part of our daily diet. While they are rich in bioactive compounds, they can be minimally processed or often consumed raw. Several outbreaks due to Salmonella ... -
Attachment and Biofilm Formation of Foodborne Pathogens
(North Dakota State University, 2017)Outbreaks of Listeria monocytogenes, Salmonella, and Escherichia coli are increasingly attributed to fresh produce. Current control measures have been assessed for decades, with no alternatives adopted. Sources were ... -
Biofilm Formation of Escherichia coli from Surface Soils is Influenced by Variation in Cell Envelope, Iron Metabolism, and Attachment Factor Genes
(North Dakota State University, 2018)Biofilm formation may increase survival and persistence of Escherichia coli in the highly variable conditions of soil environments, though it remains unknown the extent variation in biofilm formation affects survival. We ... -
Characterization of a Novel Cryptosporidium Genotype in Red-Winged Black Birds
(North Dakota State University, 2014)Cryptosporidium species cause cryptosporidiosis, characterized by acute gastroenteritis in humans and animals worldwide. Knowledge of the diversity of Cryptosporidium among mammals and birds is incomplete, especially in ... -
Characterizing Humidity, Sex, and B-Cell Gene Regulation in Fungal Allergic Asthma
(North Dakota State University, 2020)Asthma is a debilitating lung disease that affects nearly 300 million people worldwide. Environments with high humidity and subsequent mold exposure often trigger allergic asthma. Sex differences have been reported in the ... -
Cronobacter Sakazakii Characterization and Analysis of Cytotoxicity in Microvascular Endothelial Cells
(North Dakota State University, 2014)Contamination of powdered infant formulas by the bacteria Cronobacter sakazakii can pose serious risk to infants and neonates who consume the formula and subsequently develop C. sakazakii related illnesses such as sepsis ... -
The Effects of Acetoacetic Acis on Bacterial Growth and Biofilm Formation of Cronobacter Sakazakii, Serratia Marcescens, and Yersinia Enterocolitica
(North Dakota State University, 2016)Prevention of bacterial biofilms is an area of research currently being investigated by many research teams. The ability of a chemical to be incorporated into a material that could be used in a medical or food production ... -
Effects of Intensive Agricultural Management Practices on Soil Microbial Assembly and Recruitment
(North Dakota State University, 2022)Soil microbial communities play an important role in ecosystems in various ways to promote healthy and fertile soil. However, intensive agricultural practices with excessive tillage and fertilizer applications can affect ... -
Efficacy of Chlorine Dioxide Fumigation on the Spores of Paenibacillus larvae, the Causative Agent of American Foulbrood Disease in Honeybees
(North Dakota State University, 2019)Honeybees (Apis mellifera) play a critical role in agricultural pollination. However, their health and numbers are in decline. A major cause of this decline is bacterial diseases, of which American foulbrood disease (AFB) ... -
Exploration of Laboratory Techniques Relating to Cryptosporidium Parvum Propagation, Life Cycle Observation, and Host Immune Responses to Infection
(North Dakota State University, 2014)Cryptosporidium causes cryptosporidiosis, a self-limiting diarrheal disease in healthy people, but causes serious health issues for immunocompromised individuals. Cryptosporidiosis has been observed in humans since the ... -
Gene Regulation in Biofilms
(North Dakota State University, 2011)Sessile bacterial communities which form on the solid surface or solid-liquid interface are known as biofilms. Both single species and multispecies biofilms are characterized by an extracellular matrix of polymeric ... -
Glucose Uptake by the Cellulolytic Rumen Anaerobe Bacteroides Succinogenes
(North Dakota State University, 1986)Glucose uptake by the cellulclytic rumen anaerobe, Bacteroides succinogenes S85, was measured under conditions that maintained anaerobiosis and osmotic stability. This organism was found to possess a highly specific, active ... -
Happy Beef: The Development of ß-Phenylethylamine as a Novel Nutrient Treatment Reducing Bacterial Cell Count by Escherichia Coli O157H7 on Beef Meat
(North Dakota State University, 2013)Since its emergence in 1980's, Escherichia coli O157:H7 has often been associated with the consumption of contaminated meat. E. coli O157:H7 continues to persist as a food borne pathogen not only in beef but many other ... -
Impact of Pre-Harvest Environmental Factors on the Survival of Enterohemorrhagic E. Coli and Salmonella on Lettuce
(North Dakota State University, 2015)Enteric diseases linked to fresh produce consumption are on a rise. Pathogens can contaminate produce in the pre-harvest field and can survive for long time periods. Thus, this study quantified the survival of Enterohemorrhagic ... -
In the Pursuit of Poultry: β-Phenylethylamine and Ethyl Acetoacetate as Antimicrobials on Chicken
(North Dakota State University, 2022)This research examines the effect of β-phenylethylamine (PEA), a natural trace amine commonly found in food, and ethyl acetoacetate (EAA), an FDA approved flavoring agent and food additive, as novel antimicrobials on ... -
Investigations in Asthma Heterogeneity: The Roles of Aspergillus Fumigatus-Derived Eicosanoid Synthases and Occupational Exposures to Grain Dusts on the Development of Fungal Allergic Asthma
(North Dakota State University, 2013)Allergic asthma is an inflammatory syndrome of the respiratory system which changes the airway wall architecture. Using an aeroallergen, murine model of A. fumigatus-mediated asthma, the two studies herein examine the ... -
The Link Between Gut Microbiota Metabolism and Host Gluconeogenesis by Vasoactive Intestinal Peptide
(North Dakota State University, 2022)The gut microbiota (GM) plays a beneficial role in host metabolism. In mammals, the GM ferments dietary fiber into short chain fatty acids (SCFA), like propionate, that improves glucose metabolism. Rats fed a propionate ... -
lntraspecific Variation In Pathogenic Cryptosporidium parvum
(North Dakota State University, 2010)Cryptosporidium causes cryptosporidiosis, an infectious diarrheal disease, which can become chronic and life-threatening in immunocompromised individuals. Cryptosporidium parvum and C. hominis are the primary causes of ... -
Physical and Chemical Treatments for Bacterial Biofilms
(North Dakota State University, 2014)Physical and chemical treatments have been investigated for the treatment to remove biofilms. This thesis examines the problem of the removal and prevention of biofilms by: (i) using a water jet to determine biofilm stability ... -
A Porcine Circovirus Vaccine with Enhanced Capabilities
(North Dakota State University, 2016)Porcine circovirus type 2 (PCV2) is a pathogen of swine. Vaccines against PCV2 are available, although none are capable of differentiating infected from vaccinated animals (DIVA). Positive and negative DIVA markers were ...