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Permanent link (DOI): https://doi.org/10.7939/R3DT64

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The Influence of EPS Conditioning Films on Pseudomonas aeruginosa Adhesion to Solid Surfaces Open Access

Descriptions

Other title
Subject/Keyword
adhesion
EPS
ionic strength
extended DLVO theory
conditioning film
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Liang, Jiaming
Supervisor and department
Kang, Seoktae (Civil and Environmental Engineering)
Liu, Yang (Civil and Environmental Engineering)
Examining committee member and department
Ulrich, Ania (Civil and Environmental Engineering)
Zeng, Hongbo (Chemical and Material Engineering)
Department
Department of Civil and Environmental Engineering
Specialization

Date accepted
2011-08-19T20:42:08Z
Graduation date
2010-11
Degree
Master of Science
Degree level
Master's
Abstract
Bacterial adhesion to inert surfaces in aquatic environments is highly dependent on the surface properties of the substratum, which could be altered significantly by the formation of conditioning films. The impacts of extracellular polymeric substances (EPS) and its several representative components of conditioning films on the initial adhesion of the wild type Pseudomonas aeruginosa PAO1 were investigated under four different conditions of ionic strength. Our results showed that bacterial adhesion to bare slides and slides coated with alginate or humic substances increased with the ionic strength. Conversely, BSA and extracted EPS coating enhanced bacterial adhesions only under low ionic strengths, but hindered their adhesion at higher ionic strengths. In addition, during the experiments using the components of P. aeruginosa PAO1 EPS, proteins seem to dominate the impact of EPS on bacterial adhesion. The extended Derjaguin-Landau-Verwey-Overbeek (DLVO) theory was applied to explain the adhesion of P. aeruginosa PAO1 to solid surfaces.
Language
English
DOI
doi:10.7939/R3DT64
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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