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Several factors affecting ozone gas sterilization

机译：影响臭氧气体灭菌的几个因素

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摘要

Ozone gas sterilization was confirmed using commercially available as well as homemade biological indicators (Bls) utilizing Geobacillus stearothermophilus (formerly it was classified as Bacillus stearothermophilus) ATCC 12980 or ATCC 7953. The relationship between the ozone gas concentration, relative humidity or temperature and decimal reduction value (D) of Bl was studied. We also investigated how the ozone gas sterilization performance was affected by the difference in the characteristics of the carrier materials of Bis. The carrier materials used were synthesized polymers with different characteristics and stainless steels (SUSs) with different levels of surface roughness and cleanness. Effect of the difference in the ATCC number of the Bl onthe D values was also studied. There existed a satisfactory relationship between temperature, humidity and ozone gas concentration and D value (r>0.9). Results indicated that D values from Bls with carrier materials of more hydrophilic materials were greater. In addition, the D value of the Bl with a carrier material made of SUSs was greater than that made of polymers. The difference in the roughness of the surface of the SUS material did not cause any significant difference in D values. On the contrary, the difference in the cleanness caused a difference in D values. The difference in the SUS components, i.e. Fe, Ni, may cause some differences in D values. Resistance of G. stearothermophilus ATCC 12980 was around two times greater than that of ATCC 7953 when expressed as CT (concentration X time).
机译：使用市售的以及使用嗜热脂肪地芽孢杆菌（以前被分类为嗜热脂肪芽孢杆菌）ATCC 12980或ATCC 7953的自制生物指示剂（Bls）确认了臭氧气体灭菌。臭氧气体浓度，相对湿度或温度与小数减少之间的关系研究了B1的值（D）。我们还研究了Bis载体材料的特性差异如何影响臭氧气体的灭菌性能。所使用的载体材料是具有不同特性的合成聚合物以及具有不同水平的表面粗糙度和清洁度的不锈钢（SUS）。还研究了B1的ATCC数差异对D值的影响。温度，湿度和臭氧气体浓度与D值之间存在令人满意的关系（r> 0.9）。结果表明，带有更多亲水材料的载体材料的Bls的D值更大。另外，具有由SUS制成的载体材料的B1的D值大于由聚合物制成的B1的D值。 SUS材料表面粗糙度的差异不会引起D值的任何显着差异。相反，清洁度的差异导致D值的差异。 SUS成分即Fe，Ni的差异可能会引起D值的差异。用CT（浓度X时间）表示时，嗜热链球菌ATCC 12980的抗性是ATCC 7953的抗性的两倍左右。

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