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Silver nanoparticles obtained by aqueous or ethanolic aloe Vera extracts: An assessment of the antibacterial activity and mercury removal capability

dc.creatorVélez E.spa
dc.creatorCampillo G.spa
dc.creatorMorales G.spa
dc.creatorHincapié C.spa
dc.creatorOsorio J.spa
dc.creatorArnache O.spa
dc.date.accessioned2018-10-31T13:44:22Z
dc.date.available2018-10-31T13:44:22Z
dc.date.created2018
dc.identifier.issn16874110
dc.identifier.urihttp://hdl.handle.net/11407/4896
dc.descriptionSilver nanoparticles (AgNPs) were synthesized by chemical reduction of Ag+ ions (from silver nitrate AgNO3), using aqueous or ethanolic Aloe vera extracts as reducing, stabilizing, and size control agent. The nanop articles' sizes were between 2 and 7nm for ethanolic extract and between 3 and 14nm for aqueous extract, as measured by High-Resolution Transmission Electron Microscope (HRTEM). The antibacterial activity against a mesophilic microorganism, Kocuria varians, a Gram-positive coccus, was measured by counting bacterial colonies in agar plate for both extracts. We found that 4% effective concentration is the lowest concentration that completely inhibited visible growth. Mercury removal was investigated by Atomic Absorption Spectroscopy (AAS) measurements, where it was shown that it is not necessary to use high concentrations of nano particles for effective removal of mercury inasmuch as with a 20% V/V concentration of both extracts; the Hg(II) removal percentage was above 95%. These results show that the mercury remaining un removed from the different essays is below the level allowed by World Health Organization (WHO) and the Environmental Protection Agency (EPA). © 2018 Ederley Vélez et al.spa
dc.language.isoeng
dc.publisherHindawi Limitedspa
dc.relation.isversionofhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85048382425&doi=10.1155%2f2018%2f7215210&partnerID=40&md5=d6e037c6959487df5f19e0b572130bf5spa
dc.sourceScopusspa
dc.subjectAbsorption spectroscopyspa
dc.subjectAtomic absorption spectrometryspa
dc.subjectEnvironmental Protection Agencyspa
dc.subjectMetal nanoparticlesspa
dc.subjectSilver compoundsspa
dc.subjectSilver nanoparticlesspa
dc.subjectSurface morphologyspa
dc.subjectSynthesis (chemical)spa
dc.subjectAnti-bacterial activityspa
dc.subjectAtomic absorption spectroscopyspa
dc.subjectBacterial coloniesspa
dc.subjectEffective concentrationspa
dc.subjectGram-positive coccispa
dc.subjectHigh-resolution transmission electron microscopesspa
dc.subjectSilver nanoparticles (AgNps)spa
dc.subjectWorld Health Organizationspa
dc.subjectMercury compoundsspa
dc.titleSilver nanoparticles obtained by aqueous or ethanolic aloe Vera extracts: An assessment of the antibacterial activity and mercury removal capabilityspa
dc.typeArticleeng
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccess
dc.publisher.programIngeniería Ambientalspa
dc.publisher.programCiencias Básicasspa
dc.contributor.affiliationVélez, E., Universidad de Medellín;Campillo, G., Universidad de Medellín;Morales, G., Universidad DeMedellín;Hincapié, C., Universidad de Medellín;Osorio, J., Universidad de Antioquia;Arnache, O., Universidad de Antioquiaspa
dc.identifier.doi10.1155/2018/7215210
dc.relation.citationvolume2018
dc.publisher.facultyFacultad de Ingenieríasspa
dc.publisher.facultyFacultad de Ciencias Básicasspa
dc.relation.ispartofesJournal of Nanomaterialsspa
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