Denitration of glycerol trinitrate by resting cells and cell extracts of Bacillus thuringiensis/cereus and Enterobacter agglomerans

Article Abstract:

Ways to treat glycerol trinitrate (GTN) containing wastes are important since GTN is toxic, explosive and does not degrade in the environment. Bacillus thuringiensis/cereus and Enterobacter agglomerans isolated from soil and sediment completely denitrate GTN to glycerol without requiring the cofactor addition. This reaction indicates that these two isolates are biochemically and genetically capable of treating GTN-containing wastes. Thin layer chromatography and high-performance liquid chromatography indicates a sequential pathway of GTN denitration to glycerol.

Analysis

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Physiologic mechanisms involved in accumulation of 3-hydroxypropionaldehyde during fermentation of glycerol by Enterobacter agglomerans

Article Abstract:

The partial inhibition of 1,3-propanediol dehydrogenase activity by NAD/NADH ratio causes the accumulation of 3-hydroxypropionaldehyde (3-HPA), during the fermentation of glycerol by Enterobacter agglomerans. With the decrease in NAD/NADH ratio at pH 8, further accumulation of 3-HPA is halted. 3-HPA accumulation suppresses the activity of glycerol dehydrogenase resulting in lower rates of glycerol dissimilation.

Physiological aspects, Microbial metabolism, Enterobacteriaceae, Bioaccumulation

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Complete denitration of nitroglycerin by bacteria isolated from a washwater soakway

Article Abstract:

Researchers have discovered that a strain of Rhodococcus can completely degrade nitroglycerin, removing all three nitrogen atoms. Pseudomonas putida, Arthrobacter sp., and Klebsiella sp. were also able to use nitroglycerin as their sole nitrogen source, but only Rhodococcus could remove all three nitrogen atoms.

Biodegradation, Denitrification

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