Bacteriostatic Effects of Apatite-Covered Ag/AgBr/TiO2 Nanocomposite in the Dark: Anomaly in Bacterial Motility

Citeable URL: https://ir.library.oregonstate.edu/concern/articles/pv63g546h

Descriptions

Attribute Name	Values
Creator	Ahmadyand, Seyedsaeid Elahifard, Mohammadreza Jabbarzadeh, Mehdi Mirzanejad, Amir Pflughoeft, Kathryn Abbasi, Bahman Abbasi, Behrooz
Abstract	In this paper, we report a unique property of inactivating Gram-positive/negative bacteria in the dark via apatite-covered Ag/AgBr/TiO2 nanocomposites (AAAT). We demonstrate that the inactivation mechanism is bacteriostatic based on the cellular integrity and motility of bacteria, low toxicity and high durability of AAAT. From straight observations, the catalytic loading affects the bacterial replication and cell envelope as well as inducing an anomaly in bacterial motility (continuous rotation) for both types of bacteria. Both simulation and experimental analyses suggest that the anomaly could be due to posterior intracellular signals rather than purely mechanical effects (e.g., size enlargement and motility retardation). Provoked by chemomechanical stimuli, these signals increase the frequency of flagellar tumbling and eventually entangle the bacteria.
License	Attribution 4.0 (CC BY 4.0)
Resource Type	Article
DOI	https://doi.org/10.1021/acs.jpcb.8b10710
Date Issued	2019-01-31
Journal Title	Journal of Physical Chemistry B
Journal Volume	123
Urheberrechts-Erklärung	In Copyright
Language	English [eng]
ISSN	1520-6106