Microscopical observation of the marine bacterium vibrio natriegeus growth on metallic corrosion

Cheng, Sha and Lau, Kin-Tak and Chen, Shougang and Chang, Xueting and Liu, Tao and Yin, Yansheng (2010) Microscopical observation of the marine bacterium vibrio natriegeus growth on metallic corrosion. Materials and Manufacturing Processes, 25 (5). pp. 293-297. ISSN 1042-6914

Abstract

Biofilm formation and the adsorption of nonsulfate-reducing marine bacterium Vibrio natriegens (V. natriegens) to different metallic surfaces have been studied by atomic force microscopy (AFM). The nature of extracellular polymeric substance (EPS) has been monitored through the force-distance curve. EPS may act as adhesive binding adjacent cells and thus further enhance the aggregation of microbes during cluster formation due to its adhesiveness in nature. The AFM images supplied the change of the morphology of microbial cells and colonies, the distribution of microbial colonies, and the presence of EPS on the surfaces with immersion. Results showed that the biofilms formed on the surfaces increased in thickness and heterogeneity with time and that 3–7 days was the proliferation period of the bacteria on metallic surfaces. The corrosion type of the metals by V. natriegens could be confirmed as typical pitting attack through scanning electron microscopy (SEM) observation.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to published version due to publisher copyright policy.
Depositing User: Professor Alan Lau
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Date Deposited: 05 Apr 2011 23:54
Last Modified: 20 Oct 2014 00:29
Uncontrolled Keywords: AFM; biofilm; microbially influenced corrosion (MIC); microscope technologies; SEM; vibrio natriegens
Fields of Research (FOR2008): 06 Biological Sciences > 0605 Microbiology > 060501 Bacteriology
03 Chemical Sciences > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry
10 Technology > 1002 Environmental Biotechnology > 100205 Environmental Marine Biotechnology
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9604 Control of Pests, Diseases and Exotic Species > 960407 Control of Pests, Diseases and Exotic Species in Marine Environments
Identification Number or DOI: doi: 10.1080/10426911003747642
URI: http://eprints.usq.edu.au/id/eprint/18810

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