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Fall 2022

Gaur, Gautam

Phenolic compounds are common and structurally diverse plant secondary metabolites. Epidemiological studies have associated their consumption to health benefits such as reduction of chronic inflammation and risk of colorectal cancer. Phenolic acids are a major class of dietary phenolic compounds...

Fall 2014

Liu, Yang

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...

Fall 2023

Niyirora, Clement

Glycoside hydrolase family 70 (GH70) glucansucrases have various applications in both food and non-food industries. This study reports the characterization of two GH70 enzymes, dextransucrase and branching sucrase, of Apilactobacillus kunkeei DSM 12361 on a range of acceptor substrates. GtfZ of...

Fall 2011

Su, Shu-Wei

Lactobacillus reuteri is a common organism in cereal-based foods and a gut symbiont in humans and animals, yet the molecular mechanisms allowing its persistence in various niches are not well understood. L. reuteri LTH2584 produces reutericyclin and persists in industrial sourdoughs, where acidic...

Fall 2018

Zhao, Xin

Some of the food fermenting lactobacilli are derived from the animal intestine. Lactobacillus reuteri provides a model organism to study molecular mechanisms of ecological adaptation from gut to food. The overall objective of this dissertation was to characterize ecological fitness of L. reuteri...

Fall 2017

Li, Hui

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...

Spring 2016

Ou, Qixing

Pulsed electric field (PEF) is a promising athermal food preservation technology, having the potential to provide a better balance between food safety and food quality. But the high cost of PEF treatment has limited the commercial application of this technology. The aim of this MSc thesis...

Fall 2011

Sekwati-Monang, Bonno

Fermented cereal foods produced in Africa involve a wide range of raw materials, e.g. millets, sorghum and maize, which are fermented using various microorganisms. Fermentation of these foods progresses under the influence of microorganisms and their enzyme activities. Fermentation processes...

Spring 2011

Ketabi, Ali

Isomalto-oligosaccharides (IMO) with α(1→6) and α(1→4) glucosidic linkages are produced by enzymatic conversion of starch. Isomalto-oligosaccharides are partially digested in the intestine but little information is available regarding their metabolim in vivo. It was the aim of this study to...

Spring 2017

Chen, Xiaoyan

Lactic acid bacteria produce glycans that may be applied in food and pharmaceutical industries as prebiotics, food additives, to prevent pathogen adhesion, or to modulate the host immune system. The recent identification of the structure of galacto-oligosaccharides (GOS) preparations demonstrates...