Multiple linear regression analysis of bacterial deposition to polyurethane coating after conditioning film formation in the marine environment
| Autor: | Henk J. Busscher, Joyce van Zanten, Henny C. van der Mei, Jacob de Vries, Job W Klijnstra, Dewi P Bakker |
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| Přispěvatelé: | Man, Biomaterials and Microbes (MBM), Personalized Healthcare Technology (PHT), Pediatric surgery, Amsterdam Neuroscience - Neuroinfection & -inflammation |
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Surface Properties
Polyurethanes Mineralogy GLASS Surface finish ADHESION Microbiology LENSES Bacterial Adhesion Contact angle Adsorption X-ray photoelectron spectroscopy Surface roughness Seawater Marinobacter hydrocarbonoclasticus biology Chemistry Biofilm PSEUDOMONAS-AERUGINOSA Psychrobacter biology.organism_classification Elasticity SURFACE-PROPERTIES SOLID-SURFACES Chemical engineering Linear Models Regression Analysis Halomonas STAPHYLOCOCCUS-EPIDERMIDIS Hydrophobic and Hydrophilic Interactions Gammaproteobacteria |
| Zdroj: | BMC Microbiology, 150(6), 1779-1784. BMC Microbiology, 150(6), 1779-1784. Society for General Microbiology Bakker, D P, Busscher, H J, van Zanten, J, de Vries, J, Klijnstra, J W & van der Mei, H C 2004, ' Multiple linear regression analysis of bacterial deposition to polyurethane coatings after conditioning film formation in the marine environment ', Microbiology, vol. 150, no. 6, pp. 1779-1784 . https://doi.org/10.1099/mic.0.26983-0 |
| ISSN: | 1350-0872 |
| DOI: | 10.1099/mic.0.26983-0 |
| Popis: | Many studies have shown relationships of substratum hydrophobicity, charge or roughness with bacterial adhesion, although bacterial adhesion is governed by interplay of different physico-chemical properties and multiple regression analysis would be more suitable to reveal mechanisms of bacterial adhesion. The formation of a conditioning film of organic compounds adsorbed from seawater affects the properties of substratum surfaces prior to bacterial adhesion, which is a complicating factor in studying the mechanism of bacterial adhesion. In this paper, the impact of conditioning films adsorbed from natural seawater to four polyurethane coatings with different hydrophobicity, elasticity and roughness was studied for three different marine bacterial strains in a multiple linear regression analysis. The water contact angle on hydrophobic coatings decreased on average by 8 degrees and increased on average by the same amount on hydrophilic coatings. These changes were accompanied by increased concentrations of oxygen and nitrogen on the surface as determined by X-ray photoelectron spectroscopy, indicative of adsorption of proteinaceous material. Furthermore, the mean surface roughness increased on average by 4 nm after conditioning film formation. Multiple linear regression analysis revealed that changes in deposition due to conditioning film formation ofMarinobacter hydrocarbonoclasticus,Psychrobactersp. SW5H andHalomonas pacificain a stagnation-point flow chamber could be explained in a model comprising hydrophobicity and the prevalence of nitrogen-rich components on the surface for the most hydrophobic strain. For the two more hydrophilic strains, deposition was governed by a combination of surface roughness and hydrophobicity. Elasticity was not a factor in bacterial adhesion to conditioning films. |
| Databáze: | OpenAIRE |
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