Medical/biological study (experimental study)

Influence of ELF sinusoidal electromagnetic fields on proliferation and metabolite yield of fungi med./bio.

By: Berg A, Berg H

Published in: Electromagn Biol Med 2006; 25 (1): 71-77

Aim of study (acc. to author)

This study was performed to determine the influence of extremely low frequency sinusoidal electromagnetic field on the proliferation and metabolism of 12 fungi.

Endpoint

cell viability/cell division/proliferation: cell proliferation, metabolism

Exposure

Exposure	Parameters
Exposure 1: 50 Hz Exposure duration: continuous up to 10 days	magnetic flux density: 1 mT unspecified (to 2 mT) magnetic flux density: 3 mT unspecified magnetic flux density: 5 mT unspecified magnetic flux density: 7 mT unspecified magnetic flux density: 10 mT unspecified

Exposure 1

Main characteristics

Frequency	50 Hz
Type	magnetic field
Waveform	sinusoidal
Exposure duration	continuous up to 10 days

Exposure setup

Exposure source	Helmholtz coils
Setup	A sample of fungus mycelium (9 mm in diameter) was placed on a agar culture in the center of a Petri dish (5.5 cm in diameter). Three dishes were placed inside the coils (8 cm in diameter) where their positions were shuffled every day.

Parameters

Measurand	Value	Type	Method	Mass	Remarks
magnetic flux density	1 mT	unspecified	measured	-	to 2 mT
magnetic flux density	3 mT	unspecified	measured	-	-
magnetic flux density	5 mT	unspecified	measured	-	-
magnetic flux density	7 mT	unspecified	measured	-	-
magnetic flux density	10 mT	unspecified	measured	-	-

Measurement and calculation details

The magnetic field was controlled by a Teslameter FM210T

Exposed system:

fungi
Agrocybe spec., Inonotus spec., Microsporum cookei spec., Pleurotus spec., Sepedonium chalcipori, Trichoderma spec. and Trichophyton spec.

Methods Endpoint/measurement parameters/methodology

cell viability/cell division/proliferation: proliferation (mycelium diameter, silica gel chromatography, HPLC), metabolism (active metabolites component, NMR spectroscopy)

Investigated system:

isolated bio./chem. substance
fungi, mycelium

Time of investigation:

during exposure
after exposure

Main outcome of study (acc. to author)

Each strain showed its own specific proliferation and metabolism pattern for amplitude and exposure duration applied. The response of all strains to the different magnetic flux densities were quite variable.
Data for metabolism measurement were not given.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

Anaya M et al. (2021): Effect of the oscillating magnetic field on airborne fungal
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