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• W2040892879 endingPage "455" @default.
• W2040892879 startingPage "447" @default.
• W2040892879 abstract "Past disposal of wastewaters containing 2,4,6-trinitrotoluene (TNT) at the former Nebraska Ordnance Plant has resulted in numerous acres of TNT-contaminated soil. Examining the microbial population of these soils revealed several TNT-tolerant Pseudomonas spp. We selected one species, P. savastanoi, to determine its ability to transform TNT. Pure culture experiments were performed in pseudomonas minimal medium containing 0.31 mM TNT (70 mg TNT∙L −1 ) under varied nutrient and cell density regimes. Experiments with TNT as a sole C or N source showed that P. savastanoi has the ability to denitrate TNT, as evidenced by production of 2,4-dinitrotoluene (2,4-DNT) and NO 2 − with time. TNT denitration and formation of 2,4-DNT were enhanced by removing NH 4 + and adding NO 2 − to the growth medium. In all experiments, 2-amino-4,6-dinitrotoluene (2-ADNT) and 4-amino-2,6-dinitrotoluene (4-ADNT) appeared as incidental reduction products. Glucose addition to the medium enhanced 2-ADNT and 4-ADNT production and decreased denitration of TNT. Mid-log phase cells rapidly transformed [ring- 14 C(U)]TNT but were unable to mineralize significant quantities of TNT, as evidenced by conversion of less than 1% of the label to 14 CO 2 . These results indicate that P. savastanoi is a TNT-tolerant pseudomonad that can promote TNT degradation through reductive denitration and nitro moiety reduction.Key words: TNT, biodegradation, transformation, reduction, nitrite." @default.
• W2040892879 created "2016-06-24" @default.
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• W2040892879 date "1997-05-01" @default.
• W2040892879 modified "2023-10-14" @default.
• W2040892879 title "Denitration of 2,4,6-trinitrotoluene by<i>Pseudomonas savastanoi</i>" @default.
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• W2040892879 doi "https://doi.org/10.1139/m97-063" @default.
• W2040892879 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/9198535" @default.
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