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Transformation ofo-xylene too-methyl benzoic acid by a denitrifying enrichment culture using toluene as the primary substrate |
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| Authors: | Claus Jørgensen Bo Nielsen Bjørn K. Jensen Erik Mortensen |
| Affiliation: | (1) Present address: Institute of Environmental Science and Engineering, Building 115, Technical University of Denmark, 2800 Lyngby, Denmark;(2) Present address: VKI Water Quality Institute, Agern Allé 11, DK-2970 Hørsholm;(3) Present address: Novo Nordisk, Novo Allé, DK-2880 Bagsvaerd |
| Abstract: | A highly enriched denitrifying mixed culture transformedo-xylene cometabolically along with toluene by methyl group oxidation.o-Methyl benzaldehyde ando-methyl benzoic acid accumulated transiently as metabolic products ofo-xylene transformation. Transformation ofo-methyl benzyl alcohol ando-methyl benzaldehyde occurred independently of toluene degradation and resulted in the formation of a compound coeluting witho-methyl benzoic acid on a gas chromatograph. The cometabolic relationship between toluene ando-xylene could be attributed to a mechanism linked to the initial oxidation of the methyl group. |
| Keywords: | cometabolism denitrification o-methyl benzaldehyde o-methyl benzoic acid pathway toluene o-xylene |
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