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Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli

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dc.creator Mlalila, Nichrous
dc.creator Swai, Hulda
dc.creator Hilonga, Askwar
dc.creator Kadam, Dattatreya
dc.date 2019-05-17T12:01:21Z
dc.date 2019-05-17T12:01:21Z
dc.date 2016-12-16
dc.date.accessioned 2022-10-25T09:21:01Z
dc.date.available 2022-10-25T09:21:01Z
dc.identifier http://dspace.nm-aist.ac.tz/handle/123456789/76
dc.identifier.uri http://hdl.handle.net/123456789/95372
dc.description Research Article published by Dove Press Journal
dc.description This study presents a simple and trouble-free method for determining the antimicrobial properties of silver nanoparticles (AgNPs) based on the surface plasmon resonance (SPR) bands. AgNPs were prepared by chemical reduction method using silver nitrates as a metallic precursor and formaldehyde (HCHO) as a reducing agent and capped by polyethylene glycol. Effects of several processing variables on the size and shape of AgNPs were monitored using an ultraviolet–visible spectrophotometer based on their SPR bands. The formed particles showing various particle shapes and full width at half maximum (FWHM) were tested against Escherichia coli by surface spreading using agar plates containing equal amounts of selected AgNPs samples. The NPs exhibited higher antimicrobial properties; however, monodispersed spherical NPs with narrow FWHM were more effective against E. coli growth. The NPs prepared are promising candidates in diverse applications such as antimicrobial agents in the food and biomedical industries.
dc.format application/pdf
dc.language en_US
dc.publisher Dove Press Journal
dc.subject antimicrobial agent
dc.subject full width at half maximum
dc.title Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
dc.type Article


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