In:
Canadian Journal of Microbiology, Canadian Science Publishing, Vol. 37, No. 10 ( 1991-10-01), p. 725-729
Abstract:
A denitrifying bacterium capable of pyridine degradation was isolated from contaminated soil. The Gram-negative bacterium, which was identified as an Alcaligenes sp., rapidly metabolized pyridine under anaerobic conditions with nitrate as electron acceptor. [ 14 C]Pyridine was converted to 14 CO 2 , unidentified polar metabolic products, and labeled biomass. During pyridine metabolism, nitrate was reduced to nitrogen gas via nitrite and nitrous oxide. The molar ratio of pyridine to nitrate strongly affected pyridine metabolism. Maximum pyridine degradation occurred at a nitrate concentration above 5 mM, a temperature of 22–36 °C, and a pH of 6.8–8.0. Key words: pyridine, anaerobic metabolism, denitrifying bacteria, Alcaligenes sp.
Type of Medium:
Online Resource
ISSN:
0008-4166
,
1480-3275
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
1991
detail.hit.zdb_id:
280534-0
detail.hit.zdb_id:
1481972-7
SSG:
12
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