EFFECT OF NITRATE AND THIOSULFATE CONCENTRATION ON THE DENITRIFICATION ACTIVITY OF BACTERIAL ISOLATES

Authors
LUBINA S KROMKA M DOBROTOVA M TOTH D
Citation
S. Lubina et al., EFFECT OF NITRATE AND THIOSULFATE CONCENTRATION ON THE DENITRIFICATION ACTIVITY OF BACTERIAL ISOLATES, Folia microbiologica, 41(6), 1996, pp. 510-512
Citations number
10
Categorie Soggetti
Microbiology,"Biothechnology & Applied Migrobiology
Journal title
Folia microbiologica → ACNP
ISSN journal
00155632
Volume
41
Issue
6
Year of publication
1996
Pages
510 - 512
Database
ISI
SICI code
0015-5632(1996)41:6<510:EONATC>2.0.ZU;2-R
Abstract
The denitrification activity of five bacterial isolates was studied in samples of soil and freshwater sediments and from a wastewater treatm ent plant. The bacteria were exposed in a mineral medium supplied with Na2S2O3 . 5H(2)O (electron donor) and KNO3 (electron acceptor). The e ffect of different concentrations of donor and/or acceptor of electron s was evaluated by the method of acetylene inhibition of N2O-reductase . No positive influence on denitrification activity aas observed with increased levels of individually added substrates. Three bacterial iso lates exhibited a significant increase of denitrification activity whe n measured in the presence of both tested substances.