STUDY THE EFFECTS OF HIGH AND LOW FREQUENCIES PULSED SQUARE ELECTROMAGNETIC FIELDS ON THE LOGARITHMIC GROWTH OF THE E.COLI
Journal Title: Journal of Atoms and Molecules - Year 2012, Vol 2, Issue 2
Abstract
The effect of high frequency electromagnetic fields (110 Hz with intensity of 700 milli gauss) and low frequency (10 Hz with intensity of 700 milli gauss) on the bacterium Escherichia coli (ATCC 1533) were studied. In this study, the bacterium Escherichia coli was cultured in BHI broth, then it was incubated in BHI (Brain Heart Infusion Agar) broth at 37°C for 24 hours then serial dilutions were made to and from the sixth dilution (10-4), one sample was treated with electromagnetic field for six hours and one put aside as control sample. The results showed a significant increase in the logarithm of the number of Escherichia coli (CFU/ml) treated with high frequency electromagnetic field and a significant decrease in the number of Escherichia coli (CFU/ml) exposed to lowfrequency electromagnetic field. The results of biochemical tests also showed negative effects of electromagnetic fields on the biochemical properties of Escherichia coli as a bacterium.
Authors and Affiliations
Saeed Nafisi, Asghar tanoomand, Kaveh Ebrahim Pour, Davoud Kardan, Seyyed Reza Moaddab
Keywords
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