A simple and effective method to synthesize fluorescent nanoparticles using tryptophan and light and their lethal effect against bacteria

Show simple item record

dc.contributor.author Tomita, Rafael Jun [UNIFESP]
dc.contributor.author Matos, Ricardo Almeida de [UNIFESP]
dc.contributor.author Vallim, Marcelo Afonso [UNIFESP]
dc.contributor.author Courrol, Lilia Coronato [UNIFESP]
dc.date.accessioned 2016-01-24T14:38:07Z
dc.date.available 2016-01-24T14:38:07Z
dc.date.issued 2014-11-01
dc.identifier http://dx.doi.org/10.1016/j.jphotobiol.2014.07.015
dc.identifier.citation Journal of Photochemistry and Photobiology B-biology. Lausanne: Elsevier Science Sa, v. 140, p. 157-162, 2014.
dc.identifier.issn 1011-1344
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/38400
dc.description.abstract A simple, environmentally friendly and cost-effective method was used to synthesize silver nanoparticles using typtophan and light. To prepare the nanoparticles, the following components were used: deionized water, silver nitrate, light and tryptophan. the effects of the tryptophan concentration and light exposure time on the formation of tryptophan silver nanoparticles (Tnnps) were studied. the synthesized Tnnps were characterized using transmission electron microscopy (TEM), absorption and fluorescence spectroscopy and zeta potential measurements. the synthesized Tnnps were nearly spherical, with sizes of approximately 17 nm. in addition, the antibacterial activity of Tnnps was determined by monitoring the growth curves of strains of Escherichia colt, Pseudomonas aeruginosa, Staphylococcus epidermidis, Serratia marcescens, and Enterococcus faecalis using the microdilution test. the Minimum Inhibitory Concentration (MIC) for 4 of 5 tested bacteria was determined to be between 20.0 and 17.5 mu g/mL for 48 h and between 22.5 and 20.0 mu g/mL for 72 h. (C) 2014 Elsevier B.V. All rights reserved. en
dc.description.sponsorship Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent 157-162
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.relation.ispartof Journal of Photochemistry and Photobiology B-biology
dc.rights Acesso restrito
dc.subject Tryptophan en
dc.subject Silver nanoparticles en
dc.subject Photoreduction en
dc.subject MIC en
dc.subject Bacteria en
dc.title A simple and effective method to synthesize fluorescent nanoparticles using tryptophan and light and their lethal effect against bacteria en
dc.type Artigo
dc.rights.license http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Universidade Federal de São Paulo UNIFESP, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo UNIFESP, BR-09972270 Diadema, SP, Brazil
dc.identifier.doi 10.1016/j.jphotobiol.2014.07.015
dc.description.source Web of Science
dc.identifier.wos WOS:000347018600020



File

File Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search


Browse

Statistics

My Account