Niebuhr S E, Dickson J S
Department of Microbiology, 207 Science I, Iowa State University, Ames, IA 50011, USA.
Lett Appl Microbiol. 2003;37(1):17-20. doi: 10.1046/j.1472-765x.2003.01337.x.
To determine the irradiation dose necessary to reduce the populations of Bacillus anthracis spores in a dry medium in postal envelopes.
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.
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.
Irradiation is an effective means of reducing or eliminating B. anthracis spores in a dry medium in postal envelopes.
确定减少邮政信封中干燥培养基中炭疽芽孢杆菌孢子数量所需的辐照剂量。
将炭疽芽孢杆菌斯特恩34F2孢子分散在脱脂奶粉中，然后放入标准商用邮政信封中。用一系列辐照剂量处理孢子，以确定以千戈瑞（kGy）为单位的十进制减少值（D10）。平均D10值为3.35±0.02 kGy。
需要40.2 kGy的辐照剂量才能产生与热罐装工艺相当的过程（12个D10减少）以消除肉毒梭菌孢子。
辐照是减少或消除邮政信封中干燥培养基中炭疽芽孢杆菌孢子的有效手段。
