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

Nichrous G Mlalila,1,2 Hulda Shaidi Swai,1 Askwar Hilonga,3 Dattatreya M Kadam2 1School of Life Sciences and Bioengineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania; 2ICAR-Central Institute of Post-Harvest Engineering and Technology (ICAR-CIPHET), Ludhiana, Pun...

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Autores principales:	Mlalila NG, Swai HS, Hilonga A, Kadam DM
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2016
Materias:	Antimicrobial agent Bandwidth Full width at half-maximum Nanoparticles Particle size Medical technology R855-855.5 Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/d85d0cc6bd9b431c895390ba1d3a90f1
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spelling	oai:doaj.org-article:d85d0cc6bd9b431c895390ba1d3a90f12021-12-02T00:33:28ZAntimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli1177-8903https://doaj.org/article/d85d0cc6bd9b431c895390ba1d3a90f12016-12-01T00:00:00Zhttps://www.dovepress.com/antimicrobial-dependence-of-silver-nanoparticles-on-surface-plasmon-re-peer-reviewed-article-NSAhttps://doaj.org/toc/1177-8903Nichrous G Mlalila,1,2 Hulda Shaidi Swai,1 Askwar Hilonga,3 Dattatreya M Kadam2 1School of Life Sciences and Bioengineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania; 2ICAR-Central Institute of Post-Harvest Engineering and Technology (ICAR-CIPHET), Ludhiana, Punjab, India; 3Department of Materials Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania Abstract: 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. Keywords: antimicrobial agent, bandwidth, full width at half maximum, nanoparticles, particle sizeMlalila NGSwai HSHilonga AKadam DMDove Medical PressarticleAntimicrobial agentBandwidthFull width at half-maximumNanoparticlesParticle sizeMedical technologyR855-855.5Chemical technologyTP1-1185ENNanotechnology, Science and Applications, Vol Volume 10, Pp 1-9 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Antimicrobial agent Bandwidth Full width at half-maximum Nanoparticles Particle size Medical technology R855-855.5 Chemical technology TP1-1185
spellingShingle	Antimicrobial agent Bandwidth Full width at half-maximum Nanoparticles Particle size Medical technology R855-855.5 Chemical technology TP1-1185 Mlalila NG Swai HS Hilonga A Kadam DM Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
description	Nichrous G Mlalila,1,2 Hulda Shaidi Swai,1 Askwar Hilonga,3 Dattatreya M Kadam2 1School of Life Sciences and Bioengineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania; 2ICAR-Central Institute of Post-Harvest Engineering and Technology (ICAR-CIPHET), Ludhiana, Punjab, India; 3Department of Materials Science and Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania Abstract: 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. Keywords: antimicrobial agent, bandwidth, full width at half maximum, nanoparticles, particle size
format	article
author	Mlalila NG Swai HS Hilonga A Kadam DM
author_facet	Mlalila NG Swai HS Hilonga A Kadam DM
author_sort	Mlalila NG
title	Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
title_short	Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
title_full	Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
title_fullStr	Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
title_full_unstemmed	Antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against Escherichia coli
title_sort	antimicrobial dependence of silver nanoparticles on surface plasmon resonance bands against escherichia coli
publisher	Dove Medical Press
publishDate	2016
url	https://doaj.org/article/d85d0cc6bd9b431c895390ba1d3a90f1
work_keys_str_mv	AT mlalilang antimicrobialdependenceofsilvernanoparticlesonsurfaceplasmonresonancebandsagainstescherichiacoli AT swaihs antimicrobialdependenceofsilvernanoparticlesonsurfaceplasmonresonancebandsagainstescherichiacoli AT hilongaa antimicrobialdependenceofsilvernanoparticlesonsurfaceplasmonresonancebandsagainstescherichiacoli AT kadamdm antimicrobialdependenceofsilvernanoparticlesonsurfaceplasmonresonancebandsagainstescherichiacoli
_version_	1718403709607608320

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

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