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首页> 外文期刊>International Journal of Environmental Research and Public Health >Effect of Temperature on the Survival of F-Specific RNA Coliphage, Feline Calicivirus, and Escherichia coli in Chlorinated Water
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Effect of Temperature on the Survival of F-Specific RNA Coliphage, Feline Calicivirus, and Escherichia coli in Chlorinated Water

机译：温度对F特异性RNA噬菌体，猫杯状病毒和大肠杆菌在氯化水中的存活率的影响

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摘要

We compared the survival of F-specific RNA coliphage MS2, feline calicivirus, and E. coli in normal tap water and in tap water treated to an initial concentration of 50 ppm free chlorine and held at 4°C, 25°C, or 37°C for up to 28 days. Our aim was to determine which of these two organisms (coliphage or E. coli) was better at indicating norovirus survival under the conditions of the experiment. There was a relatively rapid decline of FCV and E. coli in 50 ppm chlorine treated water and both organisms were undetectable within one day irrespective of the temperature. In contrast, FRNA phage survived for 7 to 14 days in 50 ppm chlorine treated water at all temperatures. All organisms survived for 28 days in tap water at 4°C, but FCV was undetectable on day 21 and day 7 at 25°C and 37°C, respectively. Greater survival of FRNA phage compared to E. coli in 50 ppm chlorine treated water suggests that these organisms should be further investigated as indicators of norovirus in depurated shellfish, sanitized produce, and treated wastewater which are all subject to high-level chlorine treatment.
机译：我们比较了F特异的RNA噬菌体MS2，猫杯状病毒和大肠杆菌在正常自来水中以及在初始浓度为50 ppm游离氯并保持在4°C，25°C或37的自来水中的存活率°C长达28天。我们的目的是确定在实验条件下这两种生物（鹅毛或大肠杆菌）中哪一种在指示诺如病毒存活方面更好。在50 ppm的氯处理水中，FCV和大肠杆菌的下降相对较快，并且无论温度如何，一天之内都无法检测到两种生物。相反，FRNA噬菌体在50 ppm氯处理的水中在所有温度下均可存活7至14天。所有生物均在4°C的自来水中存活28天，但在第21天和第7天分别在25°C和37°C时未检测到FCV。与在50 ppm氯处理水中的大肠杆菌相比，FRNA噬菌体的存活率更高，这表明应进一步研究这些生物，以作为纯净贝类，经消毒的农产品和经过处理的废水中均经过高氯处理的诺如病毒指示剂。

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