Antibacterial activity of silver nanoparticles of different particle size against Vibrio Natriegens
Autoři:
Yaohua Dong aff001; Hongling Zhu aff001; Yuanyuan Shen aff001; Wenting Zhang aff001; Li Zhang aff001
Působiště autorů:
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai, China
aff001; School of Mechanical Engineering, Shanghai JiaoTong University, Shanghai, China
aff002
Vyšlo v časopise:
PLoS ONE 14(9)
Kategorie:
Research Article
doi:
https://doi.org/10.1371/journal.pone.0222322
Souhrn
In this study, we describe the synthesis and characterization of silver nanoparticles (Ag-NPs) of different sizes and evaluated their antibacterial activity. Particles size and morphology were characterized by transmission electron microscopy. Evaluation of the bacteriostatic effects was performed by ultraviolet–visible spectrophotometry and comet assays. The smaller the particle size of Ag-NPs, the smaller the value of the minimum inhibitory concentration (MIC) and minimum bactericidal concentrations (MBC), indicating the greater the antibacterial activity. The antibacterial activity was determined by the generation of reactive oxygen species (ROS) by bacteria and by bacterial membrane damage. In this study, we determined ROS-induced damage of bacteria caused by Ag-NPs. In conclusion, our findings indicated that Ag-NPs were effective at different particle sizes and concentrations and that the smaller the particle size of Ag-NPs, the greater the antibacterial activity.
Klíčová slova:
Medicine and health sciences – Pharmacology – Drugs – Antibacterials – Biology and life sciences – Microbiology – Microbial control – Antimicrobials – Genetics – DNA – DNA damage – DNA electrophoresis – Biochemistry – Nucleic acids – Oxidative damage – Reactive oxygen species – Cell biology – Cellular structures and organelles – Cell membranes – Organisms – Bacteria – Engineering and technology – Nanotechnology – Nanoparticles – Physical sciences – Chemistry – Chemical elements – Silver – Research and analysis methods – Electrophoretic techniques
Zdroje
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Článek vyšel v časopise
PLOS One
2019 Číslo 9
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