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- Title
Antibacterial and antifouling activities of chitosan/TiO/Ag NPs nanocomposite films against packaged drinking water bacterial isolates.
- Authors
Natarajan, Saravanan; Bhuvaneshwari, M.; Lakshmi, D.; Mrudula, P.; Chandrasekaran, N.; Mukherjee, Amitava
- Abstract
TiO and Ag NPs are widely used as antibacterial agents against many bacterial pathogens. Chitosan (polymer) itself acts as a strong antibacterial agent. Hence, chitosan/TiO/Ag NPs incorporated nanocomposite film was prepared against packed drinking water bacterial strains. A concentration-dependent increase in the reduction of cell viability was observed in all the isolates under UV-C and dark exposure conditions. The bacteria consortium showed greater resistance against antibacterial effects of chitosan/TiO/Ag nanocomposite as compared to single isolates. Glycocalyx test and mass assessment conclude the effective antibacterial activity by inhibiting bacterial adhesion on the film surface. The release of LDH and generation of ROS act as the predominant antibacterial mechanism induced by TiO/Ag NPs. Surface characterization of chitosan/TiO/Ag nanocomposite was studied by FTIR and XRD analyses and SEM analysis after interaction with the bacteria.
- Subjects
DRINKING water microbiology; CHITOSAN; ISOLATION of biotechnological microorganisms; ANTIBACTERIAL agents; SILVER nanoparticles; FOURIER transform infrared spectroscopy; TITANIUM dioxide nanoparticles
- Publication
Environmental Science & Pollution Research, 2016, Vol 23, Issue 19, p19529
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-016-7102-6