红素颗粒大小会影响水系统中对大肠杆菌的二酸盐失活效率
Weihong Xu1, Yutong Shao1, Haibei Li1
1Tianjin Key Laboratory of Risk Assessment and Control for Environment & Food Safety, State Key Laboratory of Pathogen and Biosecurity, Academy of Military Medical Sciences, Tianjin 300050, China.
Journal of hazardous materials
|November 26, 2025
概括
微尺寸的红素对大肠杆菌提供了比纳米尺寸的红素对二 (NaClO) 消毒更好的保护. 这种以大小为依赖的效应会影响细菌的存活率和水处理中的消毒效率.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 植物生物聚合物林宁降低了水中甲 (NaClO) 消毒的有效性.
- 红素颗粒大小对消毒功效的影响尚不清楚.
研究的目的:
- 为了研究微型和纳米尺寸的素如何影响大肠杆菌被NaClO无活化.
- 阐明依赖于尺寸的红素对消毒的保护作用背后的机制.
主要方法:
- 在微型和纳米尺寸的红素存在时,大肠杆菌暴露于NaClO.
- 检测细菌活力,膜透性和生长.
- 转录基因分析和生理分析.
- 扫描电子显微镜,光染色和吸附动力学建模.
主要成果:
- 微尺寸的红素对大肠杆菌提供了比纳米尺寸的红素更好的保护.
- 微素中的细菌表现出减少了无活化,降低了膜透性和增长,与减少氧化应激和增强生物膜形成有关.
- 纳米线素形成了一层保护层,而微线素则促进了细菌在其表面聚集.
- 微素具有更高的细菌吸附能力.
结论:
- 红素的尺寸显著影响其对NaClO消毒的保护作用.
- 红素大小,细菌和消毒剂之间的明显相互作用决定了细菌的耐药性.
- 了解这些依赖大小的机制对于水处理中有效的细菌失活至关重要.
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