Assessment of Bacillus subtilis spores as a possible bioindicator for evaluation of the microbicidal efficacy of radiation processing of water
Gamma and electron-beam irradiation of Bacillus subtilis spores suspended in different types of water was studied to evaluate the inactivation of the spores and assess their possible use as a bioindicator for radiation processing. We found that the inactivation proceeded endogenously, being dose-rat...
Veröffentlicht in: | Water environment research : a research publication of the Water Environment Federation. - 1998. - 79(2007), 7 vom: 20. Juli, Seite 720-4 |
---|---|
1. Verfasser: | |
Weitere Verfasser: | , , , , |
Format: | Aufsatz |
Sprache: | English |
Veröffentlicht: |
2007
|
Zugriff auf das übergeordnete Werk: | Water environment research : a research publication of the Water Environment Federation |
Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Water Pollutants Hydrogen Peroxide BBX060AN9V Oxygen S88TT14065 |
Zusammenfassung: | Gamma and electron-beam irradiation of Bacillus subtilis spores suspended in different types of water was studied to evaluate the inactivation of the spores and assess their possible use as a bioindicator for radiation processing. We found that the inactivation proceeded endogenously, being dose-rate-dependent and affected by oxygen. The radiation resistance of the suspended spores was found to be rather high; therefore, B. subtilis spores used as a bioindicator for efficiency of water treatment by radiation under practical conditions might result in the spores being overly conservative surrogates for pathogenic microorganisms. Moreover, the doserate dependency impedes the use of the spores as a bioindicator. Thus, B. subtilis spores cannot be recommended as a bioindicator for evaluation of the microbicidal efficacy of ionizing radiation processing of water |
---|---|
Beschreibung: | Date Completed 26.09.2007 Date Revised 23.09.2019 published: Print Citation Status MEDLINE |
ISSN: | 1061-4303 |