Influence of low intensity 2,450 MHz microwave radiation upon the growth of various micro-organisms and their sensitivity towards chemical inactivation.

Microbios · 1981 · Mixed · Low evidence

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MixedLow evidencePaper 6030

In vegetative cells of P. aeruginosa and S. aureus exposed to low-intensity 2,450 MHz radiation (1 joule min-1 ml-1) for 16 h, minor structural changes in the cell envelope were reported, associated with altered preservative sensitivity. No alteration of spec…

Study snapshot

PublicationMicrobios · 1981

Study typein_vitro

Reported directionMixed

Evidence ratingLow

Abstract

The non-lethal effects of 2,450 MHz radiation upon vegetative cell of P. aeruginosa and S. aureus have been assessed at low power intensities (1 joule min-1 ml-1) over a prolonged time period (16 h). Results indicated that the cell envelope was a primary target for such radiation. Growth of micro-organisms in the presence of microwaves produced minor structural changes in their cell envelopes which resulted in an alteration of preservative sensitivity. Such changes were not sufficiently great as to result in any alteration of specific growth rates during continuous microwave exposure, neither was motility nor cellular morphology affected.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typein_vitro

Effect directionmixed

PopulationNot supplied

Sample sizeNot supplied

Exposuremicrowave · 2450 MHz · 16 h

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Microbial growth rate
Cell envelope structural changes
Preservative/chemical inactivation sensitivity
Motility
Cellular morphology

Limitations

Exposure metric reported as power intensity (1 joule min-1 ml-1) rather than SAR or field strength
No sample size or replication details provided in the abstract
Only two microorganism species assessed
Outcome measures and statistical methods not described in the abstract

View raw extracted JSON

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "microwave",
    "source": null,
    "frequency_mhz": 2450,
    "sar_wkg": null,
    "duration": "16 h"
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Microbial growth rate",
    "Cell envelope structural changes",
    "Preservative/chemical inactivation sensitivity",
    "Motility",
    "Cellular morphology"
  ],
  "main_findings": "In vegetative cells of P. aeruginosa and S. aureus exposed to low-intensity 2,450 MHz radiation (1 joule min-1 ml-1) for 16 h, minor structural changes in the cell envelope were reported, associated with altered preservative sensitivity. No alteration of specific growth rates during continuous exposure was observed, and motility and cellular morphology were not affected.",
  "effect_direction": "mixed",
  "limitations": [
    "Exposure metric reported as power intensity (1 joule min-1 ml-1) rather than SAR or field strength",
    "No sample size or replication details provided in the abstract",
    "Only two microorganism species assessed",
    "Outcome measures and statistical methods not described in the abstract"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "2450 MHz",
    "microwave radiation",
    "low intensity",
    "Pseudomonas aeruginosa",
    "Staphylococcus aureus",
    "cell envelope",
    "preservative sensitivity",
    "chemical inactivation",
    "growth rate"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: Not supplied
PubMed: 6815426

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