Destruction of Bacillus anthracis strain Sterne 34F2 spores in postal envelopes by exposure to electron beam irradiation |
| |
Authors: | Niebuhr S E Dickson J S |
| |
Affiliation: | Department of Microbiology, 207 Science I, Iowa State University, Ames, IA 50011, USA. |
| |
Abstract: | AIMS: To determine the irradiation dose necessary to reduce the populations of Bacillus anthracis spores in a dry medium in postal envelopes. METHODS AND RESULTS: Bacillus anthracis Sterne 34F2 spores were dispersed in non-fat dry milk and then placed into standard business postal envelopes. The spores were treated with a sequence of irradiation doses to determine the decimal reduction value (D10) in kiloGrays (kGy). The average D10 value was 3.35 +/- 0.02 kGy. CONCLUSIONS: An irradiation dose of 40.2 kGy would be required to result in a process equivalent to the thermal canning process (12 D10 reduction) to eliminate Clostridium botulinum spores. SIGNIFICANCE AND IMPACT OF THE STUDY: Irradiation is an effective means of reducing or eliminating B. anthracis spores in a dry medium in postal envelopes. |
| |
Keywords: | Bacillus anthracis decimal reduction value irradiation postal envelopes |
本文献已被 PubMed 等数据库收录! |
|