Index Catalog // ScholarsArchive@OSU

Improved detection methods and physiological studies of staphylococcal enterotoxin

Creator:: Kimble, Charles E.
Abstract:: The purpose of this study was to develop means to facilitate the detection of staphylococcal enterotoxin and to elucidate factors that influence enterotoxin formation. It was found that semipurification flat-gel electrophoresis in a water-cooled apparatus was more efficient than CM-cellulose and Sephadex column chromatography currently used to separate toxin from...
Resource Type:: Dissertation
Full Text:: Sephadex column chroma- tography currently used to separate toxin from soluble food constitu- ents. The

Methods of identifying food poisoning staphylococci

Creator:: Orth, Donald Simms
Abstract:: Several biochemical tests were studied to determine their correlation with coagulase activity. The lysozyme test was in perfect agreement with the coagulase test for the strains studied. Mannitol fermentation and egg yolk lipase tests were in agreement with the coagulase test for 96% of the coagulase positive strains. Sheep red...
Resource Type:: Masters Thesis
Full Text:: : METHODS OF IDENTIFYING FOOD POISONING STAPHYLO- COCCI Abstract approved: Redacted for Privacy Arth'ar W

Ecophylogenetic Characterization of the Gut Microbiome of At-risk Companion and Food Animals

Creator:: Kirchoff, Nicole S.
Abstract:: Agricultural and companion animals are integral to our way of life as they provide us with nourishment, financial resources, transportation, and companionship. However, pets, managed animals in the agricultural industry, as well as wild populations of food animals are all subject to health and mortality risks. The gut microbiome is...
Resource Type:: Dissertation
Full Text:: : Ecophylogenetic Characterization of the Gut Microbiome of At-risk Companion and Food Animals Abstract

Studies on the inhibition of food-borne pathogens and spoilage bacteria by lactic acid starter cultures

Creator:: Daly, Charles
Abstract:: The ability of Streptococcus diacetilactis to inhibit a variety of food-borne pathogens and spoilage organisms in milk and broth cultures was demonstrated. Test organisms inhibited included Pseudomonas and Alcaligenes species, Eschericia coli, Salmonella, Staphylococcus aureus, Clostridium perfringens and Vibrio parahaemolyticus. In general, approximately 99.0% and 99.9% inhibition was observed in...
Resource Type:: Dissertation
Full Text:: Studies on the inhibition of food-borne pathogens and

The role of Salmonella typhimurium type three secretion system (T3SS) and effector proteins in chromatophore cell response.

Creator:: Farhad, Mohammad
Abstract:: Bacterial contamination of food poses a great risk to human health worldwide. A chromatophore cell-based biosensor, utilizing B. splendens erythrophore cells, is an emerging technology that has shown potential to detect bacterial toxicity based on function-dependent mechanisms. Previous studies have investigated the response of erythrophore cells to foodborne pathogens, pesticides,...
Resource Type:: Masters Thesis
Full Text:: Bacterial contamination of food poses a great risk to human health worldwide. A chromatophore cell-based

The Effects of Phytoplankton Prey Species and Nutrient Limitation on Microzooplankton

Creator:: McBeain, Kelsey Ann
Abstract:: Phytoplankton and microzooplankton comprise the base and the first link of the marine food web, respectively. These microbes are key drivers of marine carbon and nutrient cycles. Phytoplankton convert atmospheric CO₂ into organic carbon, and microzooplankton consume phytoplankton, packaging phytoplankton carbon into particulate forms that have a variety of fates:...
Resource Type:: Masters Thesis
Full Text:: of the marine food web, respectively. These microbes are key drivers of marine carbon and

Genotypic and phenotypic characterization of enterotoxigenic Clostridium perfringens type A fecal isolates associated with human gastrointestinal diseases in the United Kingdom

Creator:: Harrison, Ben
Abstract:: Clostridium perfringens type A isolates producing enterotoxin (CPE) are an important cause of food poisoning and non-food-borne human gastrointestinal (GI) diseases, including antibiotic-associated diarrhea (AAD), and spontaneous diarrhea (SD). In enterotoxigenic type A isolates, the cpe gene is found on the chromosome in food poisoning isolates, but is present on...
Resource Type:: Masters Thesis
Full Text:: isolates producing enterotoxin (CPE) are an important cause of food poisoning and non-food-borne human

Detection of staphylococcal enterotoxin A by Laurell electroimmunodiffusion

Creator:: Gasper, Ekkehart
Abstract:: The serological detection of staphylococcal enterotoxin A by the quantitative technique of Laurell electroimmunodiffusion is described as well as the application of the technique to the detection of small quantities of enterotoxin A in foods. High dilutions of type-specific rabbit antiserum were used in 1% agarose gels, 1 mm thick,...
Resource Type:: Dissertation
Full Text:: investigated. Dairy as well as non- dairy food items were artificially contaminated with purified staphylo

Effect of mercury on β-galactosidase activity : possible relationship to lactose intolerance

Creator:: LaChance, Michele Collette
Abstract:: The ability of mercury to inhibit β - galactosidase activity from cell-free extracts of Streptococcus lactis, Escherichia colt and intestinal homogenates of hogs, female rats, and humans was studied. Mercuric acetate was added in vitro to all sources of β - galactosidase except for the rats, which were placed on...
Resource Type:: Masters Thesis
Full Text:: the mercury content of blood, liver, kidney and intestinal fractions and food consumption and weight

Human health significance of vibrios from the aquatic environment

Creator:: Nishibuchi, Mitsuaki
Abstract:: For the enrichment and enumeration of Vibrio fluvialis, a broth medium was designed by modifying alkaline peptone (AP) medium. This new V. fluvialis enrichment medium (FEM) was shown to be more effective than AP medium in field samplings where a total of 177 samples (estuarine waters and sediment, sewage, and...
Resource Type:: Dissertation
Full Text:: various protein chemistry techniques, and specific antiserum to VVA was prepared. Using anti-VVA serum, a

ScholarsArchive@OSU

Improved detection methods and physiological studies of staphylococcal enterotoxin

Methods of identifying food poisoning staphylococci

Ecophylogenetic Characterization of the Gut Microbiome of At-risk Companion and Food Animals

Studies on the inhibition of food-borne pathogens and spoilage bacteria by lactic acid starter cultures

The role of Salmonella typhimurium type three secretion system (T3SS) and effector proteins in chromatophore cell response.

The Effects of Phytoplankton Prey Species and Nutrient Limitation on Microzooplankton

Genotypic and phenotypic characterization of enterotoxigenic Clostridium perfringens type A fecal isolates associated with human gastrointestinal diseases in the United Kingdom

Detection of staphylococcal enterotoxin A by Laurell electroimmunodiffusion

Effect of mercury on β-galactosidase activity : possible relationship to lactose intolerance

Human health significance of vibrios from the aquatic environment

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