Annual changes in the occurrence of antibiotic-resistant coliform bacteria and enterococci in municipal wastewater

被引:18
作者
Lepesova, Kristina [1 ]
Olejnikova, Petra [2 ]
Mackulak, Tomas [3 ]
Tichy, Jozef [3 ]
Birosova, Lucia [1 ]
机构
[1] Slovak Univ Technol Bratislava, Fac Chem & Food Technol, Dept Nutr & Food Qual Assessment, Radlinskeho 9, Bratislava 81237, Slovakia
[2] Slovak Univ Technol Bratislava, Fac Chem & Food Technol, Inst Biochem & Microbiol, Radlinskeho 9, Bratislava 81237, Slovakia
[3] Slovak Univ Technol Bratislava, Fac Chem & Food Technol, Dept Environm Engn, Radlinskeho 9, Bratislava 81237, Slovakia
关键词
E.coli; Coliform bacteria; Wastewater treatment plant; Multidrug-resistance; Biofilm; MALDI-TOF MS; TOF MASS-SPECTROMETRY; ESCHERICHIA-COLI; TREATMENT PLANTS; SURFACE-WATER; MOLECULAR CHARACTERIZATION; STAPHYLOCOCCUS-AUREUS; SEASONAL OCCURRENCE; BETA-LACTAMASE; DRUG-RESISTANT; GENES;
D O I
10.1007/s11356-019-05240-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Wastewater contains subinhibitory concentrations of different micropollutants such as antibiotics that create selective pressure on bacteria. This phenomenon is also caused by insufficient wastewater treatment technology leading to the development and spread of antibiotic-resistant bacteria and resistance genes into the environment. Therefore, this work focused on monitoring of antibiotic-resistant coliform bacteria and enterococci in influent and effluent wastewaters taken from the second biggest wastewater treatment plant (Petralka) in the capital of Slovakia during 1year. Antibiotic-resistant strains were isolated, identified, and characterized in terms of susceptibility and biofilm production. All of 27 antibiotic-resistant isolates were identified mainly as Morganella morganii, Citrobacter spp., and E. coli. Multidrug-resistance was detected in 58% of isolated strains. All tested isolates could form biofilm; two strains were very strong producers, and 74% formed biofilm by strong intensity. The flow rate of the influent wastewater had a more significant impact on the number of studied bacteria than the temperature.
引用
收藏
页码:18470 / 18483
页数:14
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