STRAŠÁK, Luděk, Vladimír VETTERL and Jan ŠMARDA. Effects of low-frequency magnetic fields on bacteria Escherichia coli. Bioelectrochemistry. The Netherlands: Elsevier, 2002, vol. 2002, No 55, p. 161-164. ISSN 1567-5394.
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Basic information
Original name Effects of low-frequency magnetic fields on bacteria Escherichia coli.
Authors STRAŠÁK, Luděk (203 Czech Republic), Vladimír VETTERL (203 Czech Republic, guarantor) and Jan ŠMARDA (203 Czech Republic).
Edition Bioelectrochemistry, The Netherlands, Elsevier, 2002, 1567-5394.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10610 Biophysics
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 1.463
RIV identification code RIV/00216224:14310/02:00007469
Organization unit Faculty of Science
Keywords in English biological effects of low-frequency electromagnetic fields; bacteria E.coli;
Tags bacteria E.coli
Changed by Changed by: prof. RNDr. Vladimír Vetterl, DrSc., učo 1954. Changed: 10/2/2003 16:22.
Abstract
The effects of low-frequency magnetic fields (Bm=2,7-10 mT,f=50 Hz, time of exposure t=0-12 min, laboratory temperature) on the viability and oxidoreductive activity of gram-negative bacteria Escherichia coli were investigated. The growth of these bacteria was negatively affected by such fields. We compared two experimental systems-solenoid [Sb.Lek.99(1998)455] and a cylindrical spool-to find differences between nonhomogeneous and "more homogeneous" magnetic fields. We observed analogous effect in both experimental conditions. The growth curve of the exposed bacteria was lower than the control one. The ability of bacteria to form colonies decreased with increasing magnetic field intensity and with increasing time of exposure. The oxidoreductive activity was measured using reduction of a tetrazolium salt. The decrease in oxidoreductive activity with increasing time of exposure was observed, but the effect was due to a lower amount of bacteria surviving the exposure to the magnetic fields. The decrease in oxidoreductive activity and ability to form colonies were compared with the assumption that the effect of magnetic fields is probably bactericidal.
Links
GA310/01/0816, research and development projectName: Vliv elektrických a magnetických polí o nízkých frekvencích na biologické systémy
Investor: Czech Science Foundation, The effect of low-frequency electric and magnetic fields on the biological systems
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