| FOJT, Lukáš, Luděk STRAŠÁK a Vladimír VETTERL. Effect of electromagnetic fields on the denitrification activity of Paracoccus denitrificans. Bioelectrochemistry. The Netherlands: Elsevier, 2007, roč. 70, č. 1, s. 91-95. ISSN 1567-5394. |
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@article{710594,
author = {Fojt, Lukáš and Strašák, Luděk and Vetterl, Vladimír},
article_location = {The Netherlands},
article_number = {1},
keywords = {low-frequency electromagnetic field; denitrification; Paracoccus denitrificans; graphite electrode; CFU number;},
language = {eng},
issn = {1567-5394},
journal = {Bioelectrochemistry},
title = {Effect of electromagnetic fields on the denitrification activity of Paracoccus denitrificans},
volume = {70},
year = {2007}
}
TY - JOUR
ID - 710594
AU - Fojt, Lukáš - Strašák, Luděk - Vetterl, Vladimír
PY - 2007
TI - Effect of electromagnetic fields on the denitrification activity of Paracoccus denitrificans
JF - Bioelectrochemistry
VL - 70
IS - 1
SP - 91-95
EP - 91-95
PB - Elsevier
SN - 15675394
KW - low-frequency electromagnetic field
KW - denitrification
KW - Paracoccus denitrificans
KW - graphite electrode
KW - CFU number;
N2 - Enzymatic activity (denitrification) of Paracoccus denitrificans was estimated electrochemically by reduction of duroquinone (DQ). Graphite electrodes covered with whole bacterial cells behind a dialysis membrane were used for measurement. P. denitrificans reduce nitrate and/or nitrite under anaerobic conditions to nitrogen gas. DQ acts as an electron mediator. After donation of the electrons to the respiratory system of the bacteria, produced DQ is reduced to durohydroquinone on the electrode surface electrocatalytically. P. denitrificans were exposed to low-frequency magnetic field (10 mT, 50 Hz) for 24 min. In comparison with the control samples, the reduction peak that represents denitrification activity of the cells decreased significantly after magnetic field exposure. The decrease of the peak current was about 20%. The CFU-colony forming units-method was used to estimate the number of surviving bacteria. After 24 min exposure of 10 mT magnetic field P. denitrificans culture on electrode indicates 21% bacterial death.
ER -
FOJT, Lukáš, Luděk STRAŠÁK a Vladimír VETTERL. Effect of electromagnetic fields on the denitrification activity of Paracoccus denitrificans. \textit{Bioelectrochemistry}. The Netherlands: Elsevier, 2007, roč.~70, č.~1, s.~91-95. ISSN~1567-5394.
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