Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/86073
Type: Artigo de periódico
Title: Exploring The Use Of Biosurfactants From Bacillus Subtilis In Bionanotechnology: A Potential Dispersing Agent For Carbon Nanotube Ecotoxicological Studies
Author: Martinez D.S.T.
Faria A.F.
Berni E.
Souza Filho A.G.
Almeida G.
Caloto-Oliveira A.
Grossman M.J.
Durrant L.R.
Umbuzeiro G.A.
Alves O.L.
Abstract: In this work, we evaluate the efficiency of biosurfactants produced by Bacillus subtilis LSFM-05 for the dispersion of acid-treated multi-walled carbon nanotubes (CNT-LQES1) and the effect of dispersion on toxicity testing with Daphnia similis. Carbon nanotubes are very hydrophobic materials and they readily agglomerate in mineral water. As a result, in order to determine their toxicity it is critical to evaluate methods to disperse these nanomaterials in a biologically compatible manner. The biosurfactant used in this work, termed BioS, which is a mixture of the lipopeptides (surfactin and fengycin), was found to be non-toxic to D. similis in an acute toxicity test (48 h) and it was an excellent dispersing agent for CNT-LQES1 in reconstituted mineral water. Monitoring in real-time using the nanoparticle tracking analysis (NTA) showed that the colloidal stability of the CNT-LQES 1 suspension dispersed with BioS was highly stable. These findings are encouraging for the application of biosurfactants as nontoxic dispersion agents in the emerging fields of bionanotechnology and nanotoxicology. © 2014 Elsevier Ltd.
Editor: Elsevier Ltd
Rights: fechado
Identifier DOI: 10.1016/j.procbio.2014.04.006
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84901761926&partnerID=40&md5=2204f6e042605fb6b82766e3d80f6779
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File Description SizeFormat 
2-s2.0-84901761926.pdf1.51 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.