海水的“杀菌”特性：死亡还是衰弱？
"Bactericidal" property of seawater: death or debilitation?
作者信息
Dawe L L, Penrose W R
出版信息
Appl Environ Microbiol. 1978 May;35(5):829-33. doi: 10.1128/aem.35.5.829-833.1978.
Abstract
Coliform colony-forming units in sewage-contaminated seawater were observed to decrease rapidly with time in water that was collected from St. John's Harbour, Newfoundland, and isolated in dialysis bags; this confirms observations made in warmer climates. Adenosine 5'-triphosphate biomass, however, did not decline, nor did the particle size distribution of radioactively labeled coliforms change. It was observed that the coliforms were not killed by seawater but were debilitated to the extent that they would not form colonies on selective media. However, they recovered and grew on nutrient agar made with seawater. The adenosine 5'-triphosphate content per cell apparently did not decline during debilitation.
摘要
在从纽芬兰圣约翰港采集并置于透析袋中的污水污染海水中，观察到大肠菌群菌落形成单位随时间迅速减少；这证实了在气候较温暖地区所做的观察。然而，5'-三磷酸腺苷生物量并未下降，放射性标记大肠菌群的粒径分布也未改变。据观察，大肠菌群未被海水杀死，但活力减弱到无法在选择性培养基上形成菌落的程度。不过，它们在以海水制成的营养琼脂上能够恢复生长。在活力减弱期间，每个细胞的5'-三磷酸腺苷含量显然并未下降。
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