肠出血性大肠杆菌的耐酸性
Acid tolerance of enterohemorrhagic Escherichia coli.
作者信息
Benjamin M M, Datta A R
机构信息
Division of Molecular Biological Research and Evaluation, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Washington, D.C. 20204, USA.
出版信息
Appl Environ Microbiol. 1995 Apr;61(4):1669-72. doi: 10.1128/aem.61.4.1669-1672.1995.
Abstract
Enterohemorrhagic Escherichia coli (EHEC) strains were tested for their ability to survive in acid pH at 37 degrees C. No loss of viability was observed in an O157:H7 EHEC strain (ATCC 43895) at pH levels of 3.0 and 2.5 for at least 5 h. The level of acid tolerance of most EHEC isolates was very high, similar to that of Shigella flexneri strains. The acid tolerance was dependent on the growth phase and pH of the growth medium.
摘要
对肠出血性大肠杆菌（EHEC）菌株在37摄氏度酸性pH条件下的存活能力进行了测试。在pH值为3.0和2.5的条件下，一种O157:H7 EHEC菌株（ATCC 43895）至少5小时内未观察到活力丧失。大多数EHEC分离株的耐酸性非常高，与福氏志贺氏菌菌株相似。耐酸性取决于生长阶段和生长培养基的pH值。
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