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温度对饮用水生物膜中四种不同的机会性病原体生长的影响
Paul W J J van der Wielen1,2, Marco Dignum3, Agata Donocik4
1KWR Water Research Institute, 3433 PE Nieuwegein, The Netherlands.
Microorganisms
|June 28, 2023
概括
饮用水温度的上升促进了机会性病原体的生长. 较高的温度会增加生物膜中的Pseudomonas aeruginosa,Mycobacterium kansasii和Aspergillus fumigatus的含量,造成公共卫生风险.
科学领域:
- 环境微生物学环境微生物学
- 水质研究 水质研究
- 公共卫生科学 公共卫生科学
背景情况:
- 气候变化正在增加全球气温.
- 饮用水温度升高可以促进水系统中机会性病原体的生长.
- 了解在较高温度下病原体的行为对于公共卫生至关重要.
研究的目的:
- 研究饮用水温度升高对关键机会性病原体生长的影响.
- 为了确定Pseudomonas aeruginosa,Stenotrophomonas maltophilia,Mycobacterium kansasii和Aspergillus fumigatus的生物膜形成的温度值.
- 评估温度对病原体生长产量和生物膜ATP度的影响.
主要方法:
- 培养含有本土微生物群的饮用水生物膜.
- 在各种可控温度下 (从15.0°C开始) 化生物膜.
- 监测病原体的生长,包括生长产量和生物膜ATP度.
主要成果:
- Pseudomonas aeruginosa 和 Stenotrophomonas maltophilia 在 15.0 °C 的温度下生长.
- Mycobacterium kansasii和Aspergillus fumigatus的生长分别在20.0°C和25.0°C以上开始.
- 随着温度高达30°C,P. aeruginosa,M. kansasii和A. fumigatus的最大生长产量增加,而生物膜ATP度下降.
结论:
- 饮用水温度高,气候变化加剧,可能导致机会性病原体水平增加,如P. aeruginosa,M. kansasii和A. fumigatus.
- 饮用水系统中这些高水平的病原体存在潜在的公共卫生问题.
- 对于气候温和的国家,建议饮用水标准最高温度为25°C,以减轻风险.
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