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- 4Gänzle, Michael G.
- 3Garcia-Hernandez, Rigoberto
- 2Li, Hui
- 2Liu, Yang
- 1Allen,Richelle J
- 1André, Maria C. P. B.
- 19Graduate Studies and Research, Faculty of
- 19Graduate Studies and Research, Faculty of/Theses and Dissertations
- 5Agricultural, Food and Nutritional Science, Department of
- 5Agricultural, Food and Nutritional Science, Department of/Journal Articles (Agricultural, Food and Nutritional Science)
- 1Medicine, Department of
- 1Medicine, Department of/General Internal Medicine
Towards the microbial production of a switchable solvent by using the enzyme indoleamine N-methyltransferaseDownload
Switchable solvents are a novel class of chemicals that are characterized with the ability to reversibly switch specific properties with the addition/removal of a trigger. For instance, a solution of low ionic strength can become one of high ionic strength, and vice versa. Switchable solvents...
Strains of Escherichia coli may survive heat or pressure stress, acquire specific virulence genes and cause severe human diseases. The locus of heat resistance (LHR) has been identified as an important heat resistant element in E. coli. The objective of this thesis was to explore the role of the...
The Cpx envelope stress response of Escherichia coli regulates and is regulated by the small RNA RprADownload
When bacteria sense changes in their environment, they adapt by altering the expression of their genes in such a way that accommodates the change. To do this, bacterial cells can modulate the activity of their genes at either the level of transcription, or at the post-transcriptional level....
Influence of cyclopropane fatty acids on heat, high pressure, acid, and oxidative stress resistance in Escherichia coliDownload
Heat and high pressure resistant strains of Escherichia coli are a challenge to food safety. This study investigated effects of cyclopropane fatty acids (CFAs) on stress tolerance in the heat- and pressure-resistant strain E. coli AW1.7 and the sensitive strain E. coli MG1655. The role of CFAs...
Microbiological quality of organic vegetables produced in soil treated with different types of manure and mineral fertilizerDownload
An attempt was made to evaluate microbiological quality of horticultural crops grown organically. Three species of vegetables were used, lettuce (Lactuva sativa), radish (Raphanus sativus) and spinach (Tetragonia expansa), grown organically, in fertile soil. Six different treatments were applied:...
Application of antimicrobials for the elimination of Escherichia coli and Listeria monocytogenes in brine injected beefDownload
The application of antimicrobials to a brine-injected raw beef roast for the elimination/inhibition of heat resistant Escherichia coli and Listeria monocytogenes was investigated. The choice of antimicrobials for use in brine injected beef was based on minimum bactericidal concentration in brine...
Heat and Pressure Resistance of Escherichia coli and Its Inactivation In the Presence of Antimicrobial CompoundsDownload
Verotoxigenic Escherichia coli (VTEC) are pathogens causing severe foodborne disease. E. coli AW1.7 is a heat resistant beef carcass isolate that may be used as a surrogate organism to study the survival of VTEC on food. This dissertation examines the heat and pressure resistance of E. coli and...
Environmental Risk Factors Associated with Contamination of Private Drinking Water Wells with Escherichia coliDownload
The focus of this research was to identify environmental risk factors that play a critical role in the contamination of drinking water wells with Escherichia coli. This study used data from a case control-study carried out between April 2005 and September 2006 in Ontario and Alberta, using...