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Azione battericida di alcune radiazioni a breve lunghezza d'onda

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O. Cimitan · 1951

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Different bacterial species showed distinct ultraviolet absorption spectra, with maximum absorption around 2650 Angstroms.

Plain English Summary

Summary written for general audiences

This study investigated the bactericidal (bacteria-killing) effects of shortwave irradiation, particularly ultraviolet radiation, on various bacterial species. Bacterial cultures were exposed to ultraviolet radiation from mercury vapor lamps and electrical discharge from capacitors, and absorption spectra were determined for each strain. Different species showed distinct absorption spectra, with maximum absorption around 2650 Angstroms.

Why This Matters

This study concerns ultraviolet radiation and bacteria, so it belongs to photobiology rather than radiofrequency research. B. coli, Proteus vulgaris, B. subtilis, B. prodigiosus, B. fluorescens, B. tumefaciens, Staphylococcus p. aureus, and B. typhi all showed characteristic absorption bands, with some strains showing narrow bands and others broader ranges. Each bacterial species has a well-defined limit of absorption for UV radiation, and the majority present characteristic bands of maximum absorption. The central finding is that the bactericidal effect of UV radiation is related to the absorption of specific wavelengths by bacterial cells.

Study Details

To determine the bactericidal effects of shortwave irradiation, particularly ultraviolet radiation, on various bacterial species and to understand the spectral characteristics and mechanisms of bacterial inactivation.

Bacterial cultures were exposed to ultraviolet radiation using various sources including mercury vap...

Different bacterial species showed distinct absorption spectra for UV radiation. The maximum absorpt...

Each bacterial species has a well-defined limit of absorption for UV radiation. The majority of bacteria present characteristic bands of maximum absorption. These absorption bands are specific to a particular strain when experiments are conducted under identical conditions. The bactericidal effect of UV radiation is related to the absorption of specific wavelengths by bacterial cells.

Cite This Study
O. Cimitan (1951). Azione battericida di alcune radiazioni a breve lunghezza d'onda.
Show BibTeX
@article{azione_battericida_di_alcune_radiazioni_a_breve_lunghezza_d_onda_g5696,
  author = {O. Cimitan},
  title = {Azione battericida di alcune radiazioni a breve lunghezza d'onda},
  year = {1951},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

The study examined B. coli, Proteus vulgaris, B. subtilis, B. prodigiosus, B. fluorescens, B. tumefaciens, Staphylococcus p. aureus, and B. typhi, determining the absorption spectrum of each.
Here shortwave refers to short-wavelength radiation, particularly ultraviolet, with wavelengths measured in Angstroms. Maximum absorption occurred around 2650 Angstroms.
The aim was to determine the bactericidal effects of shortwave irradiation, particularly ultraviolet radiation, on various bacterial species and to understand the spectral characteristics and mechanisms of bacterial inactivation.
The bactericidal effect of UV radiation is related to the absorption of specific wavelengths by bacterial cells. Each bacterial species has a well-defined limit of absorption for UV radiation, and most show characteristic bands of maximum absorption.
The absorption bands are specific to a particular strain when experiments are conducted under identical conditions. The spectra varied between strains, with some showing narrow bands and others showing broader absorption ranges.