肉毒杆菌62A菌株孢子的耐化学性形式在水分活度范围0至0.9内的耐热性
Heat resistance of the chemical resistance forms of Clostridium botulinum 62A spores over the water activity range 0 to 0.9.
作者信息
Alderton G, Chen J K, Ito K A
出版信息
Appl Environ Microbiol. 1980 Sep;40(3):511-5. doi: 10.1128/aem.40.3.511-515.1980.
Abstract
Having available the separate chemical resistance forms of Clostridium botulinum 62A spores from an investigation of the effect of spore form on wet heat resistance and also a method for measuring heat resistance at known water activities over the whole water activity (aw) range, we measured the heat resistance of these preparations at four different temperatures at each aw interval of 0.1 from aw 0 to aw 0.9. The required temperature dependence of resistance was calculated for each aw increment. The spore forms showed a low resistance at aw values of 0 and 0.7 of 0.9, with a rise in resistance in the range aw 0.1 to 0.5. The temperature dependence values behaved similarly.
摘要
通过对肉毒梭菌62A芽孢不同化学抗性形式对湿热抗性影响的研究，我们获得了这些芽孢，同时还拥有一种在整个水分活度（aw）范围内已知水分活度下测量耐热性的方法。我们在从aw 0到aw 0.9的每个0.1的aw间隔下，于四个不同温度测量了这些制剂的耐热性。针对每个aw增量计算了所需的抗性温度依赖性。芽孢形式在aw值为0和0.9的0.7时显示出低抗性，在aw 0.1至0.5范围内抗性增加。温度依赖性值表现类似。
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