S E Niebuhr1, J S Dickson. 1. 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.
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.
Authors: Shannon L Helfinstine; Carlos Vargas-Aburto; Roberto M Uribe; Christopher J Woolverton Journal: Appl Environ Microbiol Date: 2005-11 Impact factor: 4.792
Authors: Christopher K Cote; Tony Buhr; Casey B Bernhards; Matthew D Bohmke; Alena M Calm; Josephine S Esteban-Trexler; Melissa Hunter; Sarah E Katoski; Neil Kennihan; Christopher P Klimko; Jeremy A Miller; Zachary A Minter; Jerry W Pfarr; Amber M Prugh; Avery V Quirk; Bryan A Rivers; April A Shea; Jennifer L Shoe; Todd M Sickler; Alice A Young; David P Fetterer; Susan L Welkos; Joel A Bozue; Derrell McPherson; Augustus W Fountain; Henry S Gibbons Journal: Appl Environ Microbiol Date: 2018-05-31 Impact factor: 4.792