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Effects of ELF Magnetic Field in Combination with Iron(III) Chloride (FeCl3) on Cellular Growth and Surface Morphology of Escherichia coli (E. coli)

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Esmekaya MA, Acar SI, Kıran F, Canseven AG, Osmanagaoglu O, Seyhan N. · 2013

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ELF magnetic field exposure at 2 mT did not affect E. coli cell viability, but may have affected bacterial surface morphology.

Plain English Summary

Summary written for general audiences

Researchers investigated the effects of a 50 Hz, 2 mT magnetic field, with or without iron(III) chloride, on the growth and morphology of Escherichia coli. No significant differences in cell viability were found between exposed and sham-exposed bacteria, and FeCl3 treatment also did not change cell viability. However, pore formations and membrane destruction were observed on the surface of cells exposed to the ELF field for 24 hours.

Why This Matters

The magnetic field was generated at 50 Hz using a Helmholtz coil-based system designed to produce a sinusoidal field that was approximately uniform throughout the coil pair. Cell viability was measured by counting colonies using a standard plate count technique, expressed in colony-forming units per milliliter. Surface morphology was examined using scanning electron microscopy. The researchers concluded that while viability was unaffected, the field may affect bacterial surface morphology.

Exposure Details

Magnetic Field
2 mT
Source/Device
50 Hz
Exposure Duration
24h

Exposure Context

This study used 2 mT for magnetic fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 2 mTExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern range (Building Biology)This level is 10 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

This study investigated the effects of extremely low frequency (ELF) magnetic field with/without iron(III) chloride (FeCl3) on bacterial growth and morphology.

The ELF exposures were carried out using a pair of Helmholtz coil-based ELF exposure system which wa...

No significant results were seen in terms of cell viability between ELF and sham-exposed bacterial s...

We concluded that ELF magnetic field exposure at 2 mT does not affect cell viability; however, it may affect bacterial surface morphology.

Cite This Study
Esmekaya MA, Acar SI, Kıran F, Canseven AG, Osmanagaoglu O, Seyhan N. (2013). Effects of ELF Magnetic Field in Combination with Iron(III) Chloride (FeCl3) on Cellular Growth and Surface Morphology of Escherichia coli (E. coli) Appl Biochem Biotechnol. 169(8):2341-2349, 2013.
Show BibTeX
@article{ma_2013_effects_of_elf_magnetic_247,
  author = {Esmekaya MA and Acar SI and Kıran F and Canseven AG and Osmanagaoglu O and Seyhan N. },
  title = {Effects of ELF Magnetic Field in Combination with Iron(III) Chloride (FeCl3) on Cellular Growth and Surface Morphology of Escherichia coli (E. coli)},
  year = {2013},
  doi = {10.1007/s12010-013-0146-x},
  url = {https://link.springer.com/article/10.1007/s12010-013-0146-x},
}

Cited By (5 papers)

Quick Questions About This Study

No significant differences in cell viability were seen between ELF-exposed and sham-exposed bacterial strains.
Pore formations and membrane destruction were observed on the surface of cells exposed to the ELF field for 24 hours.
Bacteria were exposed to a 50 Hz, 2 mT sinusoidal magnetic field for 24 hours.
FeCl3 treatment did not change cell viability of E. coli samples.
Scanning electron microscopy was used to investigate the magnetic field effect on surface morphology of Escherichia coli.