Effective dose analysis of extremely low frequency (ELF) magnetic field exposure to growth of <i>S. termophilus, L. lactis, L. acidophilus</i> bacteria

Sudarti,; Prihandono, Trapsilo; Yushardi,; Ridlo, Zainur Rasyid; Kristinawati, Andika

doi:10.1088/1757-899x/432/1/012010

Cited by 7 publications

(5 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This can support the conclusion that EMWs have the ability to interfere directly with the cell membrane signal path of transduction and consequently cause alterations in transmembrane potential [ 37 , 38 ]. Such changes lead to loss of membrane electrochemical balance [ 39 ], which in turn enforces ions to cross the membrane through ionic channels without active control [ 40 , 41 ]. The incorrect electrostatic balance of the membrane indicates loss of membrane integrity and reflects dysfunctionality of the cell metabolic processes through cell to cell communication [ 42 , 43 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

et al. 2021

View full text Add to dashboard Cite

The over-reliance on antibiotics and their enormous misuse has led to warnings of a future without effective medicines and so, the need for alternatives to antibiotics has become a must. Non-traditional antibacterial treatment was performed by using an aray of nanocomposites synergised with exposure to electromagnetic waves. In this manuscript, electrospun poly(vinyl alcohol) (PVA) nanofiber mats embedded with silver nanoparticles (Ag NPs) were synthesized. The nanocomposites were characterized by Transmission Electron Microscope (TEM), Scanning Electron Microscope (SEM), Current-Voltage (I-V) curves, and Thermogravimetric analysis (TGA) along with analysis of antibacterial impact against E. coli and S. aureus bacteria, studied by bacterial growing analysis, growth kinetics, and cellular cytotoxicity. The results indicated a spherical grain shape of silver of average size 20 nm and nanofibers’ mean diameter of less than 100 nm. The nanocomposite mats showed good exposure to bacteria and the ability to sustain release of silver for a relatively long time. Moreover, the applied electromagnetic waves (EMWs) were shown to be a synergistic co-factor in killing bacteria even at low concentrations of Ag NPs. This caused pronounced alterations of the bacterial preserved packing of the cell membrane. Thereby, the treatment with nanocomposite mats under EM wave exposure elucidated maximum inhibition for both bacterial strains. It was concluded that the functioning of nanofiber with silver nanoparticles and exposure to electromagnetic waves improved the antibacterial impact compared to each one alone.

show abstract

Section: Resultsmentioning

confidence: 99%

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Some studies have claimed these fields accelerate cell potentials, promote healing, and reduce inflammation, while others have noticed its detrimental effects on both bacterial colony forming unit count (the number of bacterial cells in a sample viable for binary fission) and OD readings (18)(19). Perhaps the effects are dependent solely on the type of biological organism being exposed, or possibly there exists a complex relationship between the duration of time and EMF intensity a bacterial sample can be exposed to before causing negative/harmful effects (20). The wide range of positive and negative results generated by the experiments cited in this manuscript make it difficult to identify an exact reference point.…”

Section: Discussionmentioning

confidence: 99%

Examining the Growth of Methanotrophic Bacteria Immersed in Extremely Low-Frequency Electromagnetic Fields

Chu,

Hamilton

2022

J Emerg Invest

View full text Add to dashboard Cite

The demand for natural resources, and consequently greenhouse gas (GHG) emissions, are only set to increase in the next several decades. Methane gas, having 80 times more warming power than carbon dioxide over a 20 year period, accounts for about 10% of all U.S. GHG emissions primarily due to the agriculture and waste management industry. GHGs trap heat in Earth’s atmosphere causing rising surface temperatures and sea levels, ocean acidification, and extreme weather patterns. Methylomicrobium alcaliphilum 20ZR is a methanotrophic bacterium currently being explored as a means for mitigating these emissions and/or production of value-added compounds from wasted sources of methane. Based on related studies, we predicted that exposure to low-frequency electromagnetic fields for 5 and 15 minutes would be a feasible method to increase the growth rates of M. alcaliphilum 20ZR, while 30 minutes would decrease the growth rates. We hypothesized that this increase in growth could make this method of catabolizing methane more practical given the slow growing nature of methanotrophs in standard conditions. However, our data showed that exposure to an electromagnetic field density of 0.1 milliTesla (mT) at a frequency of 50 hertz (Hz) for 5, 15, and 30 minutes had no statistically significant effects on the growth of M. alcaliphilum 20ZR when compared to the control. The results of this study therefore do not fully support our hypothesis that an electromagnetic field can positively impact microbial growth, but future research should be done to further solidify and expand upon the data collected.

show abstract

“…Theoretical effects can provide an explanation for the magnetic sensitivity of E. coli cells and show that intracellular enzymatic reactions are the primary magnetoreceptors in residing organisms (Kim et al, 2017). Exposure to a 300 µT ELF magnetic field for 25 minutes significantly (p < 0.05) suppressed the proliferation of S. thermophilus, L. lactis, and L. acidhopilus Log phase bacteria (Sudarti et al, 2018).…”

Section: Changes In Chicken Meat Texture By Exposure To Elf Magnetic ...mentioning

confidence: 99%

“…More and more research results report That exposure to ELF magnetic fields can boom cell proliferation, but until now, this is still the subject of discussion. Exposure to the ELF magnetic area at an depth of 100 µT for 5 mins has been proven to be with a purpose to boom the proliferation of S. Thermophilus, L. Lactis, and L. Acidophilus bacteria inside the fermentation manner of making cream cheese (Sudarti et al, 2018). Meanwhile, exposure to the ELF magnetic field with an intensity of 646.7 µT for 30 mins was able to suppress the proliferation of Salmonella typhimurium in Gado-Gado seasonings by up to 56% and up to 17% in Gado-Gado vegetables.…”

Section: Introductionmentioning

confidence: 99%

Resistance of Broiler Meat through Exposure to Extremely Low Frequency Magnetic Fields of 700 ÂµT and 900 ÂµT Intensities and Safety Risks to Health

Sudarti,

Sari,

Permatasari

et al. 2023

jppipa, pendidikan ipa, fisika, biologi, kimia

View full text Add to dashboard Cite

This study aims to examine "Resistance of broiler chicken meat through exposure to ELF MF and safety risks to health". Research samples of 140 packs of fresh broiler chicken meat (@ 50 grams) were divided into seven groups (@ 20 packs), one group as control, 3 groups were exposed to ELF MF intensity of 700 µT each with an exposure duration of 30, 45 and 60 minutes, and 3 groups were exposed to ELF MF intensity of 900 µT with exposure durations of 30, 40, and 60 minutes, respectively. Indicators of chicken meat resistance include pH, density, texture, color, aroma, and the appearance of mucus in chicken meat samples that have been stored for 6, 12, 18, and 24 hours after exposure to ELF MF. Research results: the physical endurance of chicken meat stored for 12 hours after being exposed to ELF MF intensity of 700 µT and 900 µT was better than the control. Conclusion: exposure to ELF MF intensity of 900 µT for 45 minutes and 60 minutes is able to maintain the quality of chicken meat at room temperature for up to 12 hours of storage and is safe for health.

show abstract

Effective dose analysis of extremely low frequency (ELF) magnetic field exposure to growth of S. termophilus, L. lactis, L. acidophilus bacteria

Cited by 7 publications

References 15 publications

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

Antibacterial Synergism of Electrospun Nanofiber Mats Functioned with Silver Nanoparticles and Pulsed Electromagnetic Waves

Examining the Growth of Methanotrophic Bacteria Immersed in Extremely Low-Frequency Electromagnetic Fields

Resistance of Broiler Meat through Exposure to Extremely Low Frequency Magnetic Fields of 700 ÂµT and 900 ÂµT Intensities and Safety Risks to Health

Contact Info

Product

Resources

About