Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum

Christopher F. Green, Craig S. Davidson, Pasquale V. Scarpino, Shawn G. Gibbs

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The ultraviolet germicidal irradiation (UVGI) dose necessary to inactivate fungal spores on an agar surface and the efficacy of UVGI were determined for cultures of Stachybotrys chartarum (ATCC 208877). This study employed a UVGI testing unit consisting of four chambers with a 9-W, Phillips, low pressure, mercury UVGI lamp in each chamber. The testing unit's apertures were adjusted to provide 50, 100, 150, and 200 μW/cm2 of uniform flux to the Petri dish surfaces, resulting in a total UVGI surface dose ranging from 12 to 144 mJ/cm2. The UVGI dose necessary to inactivate 90% of the S. chartarum was greater than the maximum dose of 144 mJ/cm2 evaluated in this study. While UVGI has been used to inactivate several strains of culturable fungal spores, S. chartarum was not susceptible to an appropriate dose of UVGI. The results of this study may not correlate directly to the effect of UVGI on airborne fungal spores. However, they indicate that current technology may not be efficacious as a supplement to ventilation unless it can provide higher doses of UVGI to kill spores, such as S. chartarum, traveling through the irradiated zone.

Original languageEnglish (US)
Pages (from-to)801-804
Number of pages4
JournalCanadian journal of microbiology
Volume51
Issue number9
DOIs
StatePublished - Sep 1 2005

Fingerprint

Stachybotrys
Fungal Spores
Disinfection
Irradiation
Dosimetry
Spores
Mercury
Agar
Ventilation
Technology
Pressure
Testing
Electric lamps

Keywords

  • Fungi
  • Stachybotrys chartarum (synonyms S. Atra, S. Alternana)
  • Ultraviolet germicidal irradiation

ASJC Scopus subject areas

  • Microbiology
  • Immunology
  • Applied Microbiology and Biotechnology
  • Molecular Biology
  • Genetics

Cite this

Green, C. F., Davidson, C. S., Scarpino, P. V., & Gibbs, S. G. (2005). Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum. Canadian journal of microbiology, 51(9), 801-804. https://doi.org/10.1139/W05-061

Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum. / Green, Christopher F.; Davidson, Craig S.; Scarpino, Pasquale V.; Gibbs, Shawn G.

In: Canadian journal of microbiology, Vol. 51, No. 9, 01.09.2005, p. 801-804.

Research output: Contribution to journalArticle

Green, CF, Davidson, CS, Scarpino, PV & Gibbs, SG 2005, 'Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum', Canadian journal of microbiology, vol. 51, no. 9, pp. 801-804. https://doi.org/10.1139/W05-061
Green, Christopher F. ; Davidson, Craig S. ; Scarpino, Pasquale V. ; Gibbs, Shawn G. / Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum. In: Canadian journal of microbiology. 2005 ; Vol. 51, No. 9. pp. 801-804.
@article{1167f0c17d174428b12e926815e1d38a,
title = "Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum",
abstract = "The ultraviolet germicidal irradiation (UVGI) dose necessary to inactivate fungal spores on an agar surface and the efficacy of UVGI were determined for cultures of Stachybotrys chartarum (ATCC 208877). This study employed a UVGI testing unit consisting of four chambers with a 9-W, Phillips, low pressure, mercury UVGI lamp in each chamber. The testing unit's apertures were adjusted to provide 50, 100, 150, and 200 μW/cm2 of uniform flux to the Petri dish surfaces, resulting in a total UVGI surface dose ranging from 12 to 144 mJ/cm2. The UVGI dose necessary to inactivate 90{\%} of the S. chartarum was greater than the maximum dose of 144 mJ/cm2 evaluated in this study. While UVGI has been used to inactivate several strains of culturable fungal spores, S. chartarum was not susceptible to an appropriate dose of UVGI. The results of this study may not correlate directly to the effect of UVGI on airborne fungal spores. However, they indicate that current technology may not be efficacious as a supplement to ventilation unless it can provide higher doses of UVGI to kill spores, such as S. chartarum, traveling through the irradiated zone.",
keywords = "Fungi, Stachybotrys chartarum (synonyms S. Atra, S. Alternana), Ultraviolet germicidal irradiation",
author = "Green, {Christopher F.} and Davidson, {Craig S.} and Scarpino, {Pasquale V.} and Gibbs, {Shawn G.}",
year = "2005",
month = "9",
day = "1",
doi = "10.1139/W05-061",
language = "English (US)",
volume = "51",
pages = "801--804",
journal = "Canadian Journal of Microbiology",
issn = "0008-4166",
publisher = "National Research Council of Canada",
number = "9",

}

TY - JOUR

T1 - Ultraviolet germicidal irradiation disinfection of Stachybotrys chartarum

AU - Green, Christopher F.

AU - Davidson, Craig S.

AU - Scarpino, Pasquale V.

AU - Gibbs, Shawn G.

PY - 2005/9/1

Y1 - 2005/9/1

N2 - The ultraviolet germicidal irradiation (UVGI) dose necessary to inactivate fungal spores on an agar surface and the efficacy of UVGI were determined for cultures of Stachybotrys chartarum (ATCC 208877). This study employed a UVGI testing unit consisting of four chambers with a 9-W, Phillips, low pressure, mercury UVGI lamp in each chamber. The testing unit's apertures were adjusted to provide 50, 100, 150, and 200 μW/cm2 of uniform flux to the Petri dish surfaces, resulting in a total UVGI surface dose ranging from 12 to 144 mJ/cm2. The UVGI dose necessary to inactivate 90% of the S. chartarum was greater than the maximum dose of 144 mJ/cm2 evaluated in this study. While UVGI has been used to inactivate several strains of culturable fungal spores, S. chartarum was not susceptible to an appropriate dose of UVGI. The results of this study may not correlate directly to the effect of UVGI on airborne fungal spores. However, they indicate that current technology may not be efficacious as a supplement to ventilation unless it can provide higher doses of UVGI to kill spores, such as S. chartarum, traveling through the irradiated zone.

AB - The ultraviolet germicidal irradiation (UVGI) dose necessary to inactivate fungal spores on an agar surface and the efficacy of UVGI were determined for cultures of Stachybotrys chartarum (ATCC 208877). This study employed a UVGI testing unit consisting of four chambers with a 9-W, Phillips, low pressure, mercury UVGI lamp in each chamber. The testing unit's apertures were adjusted to provide 50, 100, 150, and 200 μW/cm2 of uniform flux to the Petri dish surfaces, resulting in a total UVGI surface dose ranging from 12 to 144 mJ/cm2. The UVGI dose necessary to inactivate 90% of the S. chartarum was greater than the maximum dose of 144 mJ/cm2 evaluated in this study. While UVGI has been used to inactivate several strains of culturable fungal spores, S. chartarum was not susceptible to an appropriate dose of UVGI. The results of this study may not correlate directly to the effect of UVGI on airborne fungal spores. However, they indicate that current technology may not be efficacious as a supplement to ventilation unless it can provide higher doses of UVGI to kill spores, such as S. chartarum, traveling through the irradiated zone.

KW - Fungi

KW - Stachybotrys chartarum (synonyms S. Atra, S. Alternana)

KW - Ultraviolet germicidal irradiation

UR - http://www.scopus.com/inward/record.url?scp=30344449484&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=30344449484&partnerID=8YFLogxK

U2 - 10.1139/W05-061

DO - 10.1139/W05-061

M3 - Article

C2 - 16391660

AN - SCOPUS:30344449484

VL - 51

SP - 801

EP - 804

JO - Canadian Journal of Microbiology

JF - Canadian Journal of Microbiology

SN - 0008-4166

IS - 9

ER -