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Polysaccharides of Microorganisms

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Title: Polysaccharides of Microorganisms
Author: Pottier, Max
Department: Department of Chemistry
Program: Chemistry
Advisor: Monteiro, Mario
Abstract: This thesis is an investigation of the exopolysaccharides produced by Lactococcus lactis subsp. Cremoris JFR1 and the hyphal cell wall glucans of Candida albicans. L. lactis is an important organism in the dairy industry for the production of fermented dairy products and the exopolysaccharides have been shown to add textural qualities to the foods. C. albicans is a fungal pathogen responsible for the common yeast infection and many post-surgery complications in hospitals and can grow in both the yeast and hyphae form. Through a series of GC-MS, NMR and chemical degradation experiments three unique polysaccharides are discovered in the L. lactis samples giving a molecular basis to the textural qualities provided by these molecules. Additionally, several unique structural features are discovered on the C. albicans hyphal glucan providing possible explanations for the differing immune responses elicited by the hyphae form of the fungus.
Date: 2012-12
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