Gold nanoparticles as efficient antimicrobial agents for Escherichia coli and Salmonella typhi

Enrique Lima, Roberto Guerra, Víctor Lara, Ariel Guzmán

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

Background: It is imperative to eliminate bacteria present in water in order to avoid problems in healthy. Escherichia coli and Salmonella typhi bacteria are two common pollutants and they are developing resistance to some of the most used bactericide. Therefore new biocide materials are being tested. Thus, gold nanoparticles are proposed to inhibit the growth of these two microorganisms.Results: Gold nanoparticles were supported onto clinoptilolite, mordenite and faujasite zeolites. Content of gold in materials varied between 2.3 and 2.8 wt%. The size, dispersion and roughness of gold nanoparticles were highly dependent of the zeolite support. The faujasite support was the support where the 5 nm nanoparticles were highly dispersed. The efficiency of gold-zeolites as bactericides of Escherichia coli and Salmonella typhi was determined by the zeolite support. Conclusions: Gold nanoparticles dispersed on zeolites eliminate Escherichia coli and Salmonella typhi at short times. The biocidal properties of gold nanoparticles are influenced by the type of support which, indeed, drives key parameters as the size and roughness of nanoparticles. The more actives materials were pointed out Au-faujasite. These materials contained particles sized 5 nm at surface and eliminate 90-95% of Escherichia coli and Salmonella typhi colonies. © 2013 Lima et al.; licensee Chemistry Central Ltd.
Original languageAmerican English
JournalChemistry Central Journal
DOIs
StatePublished - 19 Jan 2013
Externally publishedYes

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Salmonella
Anti-Infective Agents
Gold
Zeolites
Escherichia coli
Nanoparticles
Bactericides
Bacteria
Surface roughness
Disinfectants
Microorganisms
Water
faujasite

Cite this

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title = "Gold nanoparticles as efficient antimicrobial agents for Escherichia coli and Salmonella typhi",
abstract = "Background: It is imperative to eliminate bacteria present in water in order to avoid problems in healthy. Escherichia coli and Salmonella typhi bacteria are two common pollutants and they are developing resistance to some of the most used bactericide. Therefore new biocide materials are being tested. Thus, gold nanoparticles are proposed to inhibit the growth of these two microorganisms.Results: Gold nanoparticles were supported onto clinoptilolite, mordenite and faujasite zeolites. Content of gold in materials varied between 2.3 and 2.8 wt{\%}. The size, dispersion and roughness of gold nanoparticles were highly dependent of the zeolite support. The faujasite support was the support where the 5 nm nanoparticles were highly dispersed. The efficiency of gold-zeolites as bactericides of Escherichia coli and Salmonella typhi was determined by the zeolite support. Conclusions: Gold nanoparticles dispersed on zeolites eliminate Escherichia coli and Salmonella typhi at short times. The biocidal properties of gold nanoparticles are influenced by the type of support which, indeed, drives key parameters as the size and roughness of nanoparticles. The more actives materials were pointed out Au-faujasite. These materials contained particles sized 5 nm at surface and eliminate 90-95{\%} of Escherichia coli and Salmonella typhi colonies. {\circledC} 2013 Lima et al.; licensee Chemistry Central Ltd.",
author = "Enrique Lima and Roberto Guerra and V{\'i}ctor Lara and Ariel Guzm{\'a}n",
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Gold nanoparticles as efficient antimicrobial agents for Escherichia coli and Salmonella typhi. / Lima, Enrique; Guerra, Roberto; Lara, Víctor; Guzmán, Ariel.

In: Chemistry Central Journal, 19.01.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Gold nanoparticles as efficient antimicrobial agents for Escherichia coli and Salmonella typhi

AU - Lima, Enrique

AU - Guerra, Roberto

AU - Lara, Víctor

AU - Guzmán, Ariel

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N2 - Background: It is imperative to eliminate bacteria present in water in order to avoid problems in healthy. Escherichia coli and Salmonella typhi bacteria are two common pollutants and they are developing resistance to some of the most used bactericide. Therefore new biocide materials are being tested. Thus, gold nanoparticles are proposed to inhibit the growth of these two microorganisms.Results: Gold nanoparticles were supported onto clinoptilolite, mordenite and faujasite zeolites. Content of gold in materials varied between 2.3 and 2.8 wt%. The size, dispersion and roughness of gold nanoparticles were highly dependent of the zeolite support. The faujasite support was the support where the 5 nm nanoparticles were highly dispersed. The efficiency of gold-zeolites as bactericides of Escherichia coli and Salmonella typhi was determined by the zeolite support. Conclusions: Gold nanoparticles dispersed on zeolites eliminate Escherichia coli and Salmonella typhi at short times. The biocidal properties of gold nanoparticles are influenced by the type of support which, indeed, drives key parameters as the size and roughness of nanoparticles. The more actives materials were pointed out Au-faujasite. These materials contained particles sized 5 nm at surface and eliminate 90-95% of Escherichia coli and Salmonella typhi colonies. © 2013 Lima et al.; licensee Chemistry Central Ltd.

AB - Background: It is imperative to eliminate bacteria present in water in order to avoid problems in healthy. Escherichia coli and Salmonella typhi bacteria are two common pollutants and they are developing resistance to some of the most used bactericide. Therefore new biocide materials are being tested. Thus, gold nanoparticles are proposed to inhibit the growth of these two microorganisms.Results: Gold nanoparticles were supported onto clinoptilolite, mordenite and faujasite zeolites. Content of gold in materials varied between 2.3 and 2.8 wt%. The size, dispersion and roughness of gold nanoparticles were highly dependent of the zeolite support. The faujasite support was the support where the 5 nm nanoparticles were highly dispersed. The efficiency of gold-zeolites as bactericides of Escherichia coli and Salmonella typhi was determined by the zeolite support. Conclusions: Gold nanoparticles dispersed on zeolites eliminate Escherichia coli and Salmonella typhi at short times. The biocidal properties of gold nanoparticles are influenced by the type of support which, indeed, drives key parameters as the size and roughness of nanoparticles. The more actives materials were pointed out Au-faujasite. These materials contained particles sized 5 nm at surface and eliminate 90-95% of Escherichia coli and Salmonella typhi colonies. © 2013 Lima et al.; licensee Chemistry Central Ltd.

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