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The anaerobic biodegradation of diethanolamine by a nitrate reducing bacterium
Authors:Jeremy S. Knapp  Nicholas D. Jenkey  Colin C. Townsley
Affiliation:1. Department of Microbiology, University of Leeds, LS2 9JT, UK
2. Technology Centre, Castrol International, Pangbourne, UK
Abstract:The ability of bacterial cultures to degrade diethanolamine under anoxic conditions with nitrate as an electron acceptor was investigated. A mixed culture capable of anaerobic degradation of diethanolamine was obtained from river sediments by enrichment culture. From this a single bacterial strain was isolated which could use diethanolamine, monoethanolamine, triethanolamine and N-methyl diethanolamine as its sole carbon and energy sources either aerobically or anaerobically. Growth on diethanolamine was faster in the absence of oxygen. The accumulation of possible metabolites in the culture medium was determined as was the ability to grow on certain putative intermediates in the degradation of diethanolamine. A possible pathway for the degradation of ethanolamines by this organism is suggested.
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