Feng Cuimin, Wang Shuaiqi, Wang Ting, Wei Tong, Chen Zexin, Jing Xueqing
Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, People's Republic of China.
China State Construction Engineering Corporation AECOM Consultants Co., Ltd., Lanzhou, People's Republic of China.
Environ Technol. 2025 Aug;46(19):3791-3803. doi: 10.1080/09593330.2025.2478178. Epub 2025 Mar 13.
The structural and abundance changes in water disinfected by tea polyphenols were investigated in high-abundance microbial communities (HAMC), medium-abundance microbial communities (MAMC), and low-abundance microbial communities (LAMC), also included the interactions within and between these communities. The antibacterial effect of tea polyphenols was observed at concentrations of 20-300 mg/L. If the tea polyphenols concentration is greater than or equal to 200 mg/L, it can continue to inhibit the growth of bacteria, and keep the total number of bacteria in 48 hours no more than100 CFU/ml, and this reflected the continuity of tea polyphenols disinfectant in the pipe network. The relative abundance of some chlorine-resistant bacteria such as , and decreased significantly after disinfection with tea polyphenols, which indicates that tea polyphenols have the advantage of removing some chlorine-resistant bacteria. Samples of HAMC, MAMC and LAMC showed similar structure. Co-occurrence network analysis within microbial communities revealed the most complex interrelationships in HAMC. Co-occurrence network analysis between microbial communities showed that HAMC and MAMC were most closely related. In the co-occurrence network, 8 key bacteria genera were identified, in which 5 key genera belonged to medium-abundance and low-abundance. Potential pathogens were identified in the study and potential pathogens were and were pointed out after tea polyphenols disinfection as the key potential pathogen genera by co-occurrence network analysis. The co-occurrence relationship between these key potential pathogens and other potential pathogens indicates that water quality safety can be controlled by the number of key potential pathogens.
在高丰度微生物群落（HAMC）、中等丰度微生物群落（MAMC）和低丰度微生物群落（LAMC）中，研究了经茶多酚消毒的水中的结构和丰度变化，还包括这些群落内部和之间的相互作用。在20-300mg/L的浓度下观察到了茶多酚的抗菌效果。如果茶多酚浓度大于或等于200mg/L，它可以持续抑制细菌生长，并使48小时内细菌总数不超过100CFU/ml，这反映了茶多酚消毒剂在管网中的持续性。用茶多酚消毒后，一些耐氯细菌如、和的相对丰度显著下降，这表明茶多酚具有去除一些耐氯细菌的优势。HAMC、MAMC和LAMC的样本显示出相似的结构。微生物群落内部的共现网络分析揭示了HAMC中最复杂的相互关系。微生物群落之间的共现网络分析表明，HAMC和MAMC关系最为密切。在共现网络中，鉴定出8个关键细菌属，其中5个关键属属于中等丰度和低丰度。在研究中鉴定出了潜在病原体，经茶多酚消毒后，和被指出是共现网络分析中的关键潜在病原体属。这些关键潜在病原体与其他潜在病原体之间的共现关系表明，水质安全可以通过关键潜在病原体的数量来控制。
