Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.apcata.2015.11.036 http://hdl.handle.net/11449/172353 |
Resumo: | Photoelectrocatalysis (PEC) has become an attractive technology to disinfect microorganisms from aqueous environments because of its ability to degrade microorganisms without producing any harmful by-products. PEC methodology was applied to inactivate Candida parapsilosis sensu stricto in planktonic and biofilm cells, and its efficiency was compared to that of photolytic and photocatalytic treatment. In the case of planktonic (free-floating) cells, PEC promoted the inactivation of 106 CFU mL-1 after 3 min of treatment, and the addition of silver nanoparticles to the Ti/TiO2 electrodes had virtually no effect on the disinfection period, although it caused a decrease by a factor of 1.5 in the mineralization efficiency. After 60, 10 and 60 min of treatment, PEC methodology reduced 106 CFU mL-1 on fungal biofilms and provided 71, 91 and 92% mineralization for biofilm cells performed on polyvinyl chloride (PVC), silicone, and polytetrafluoroethylene (PTFE), respectively. These results indicated that PEC is a promising process for disinfection of water contaminated with C. parapsilosis sensu stricto in both planktonic and biofilm cells. |
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Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilmsBiofilmC. parapsilosisPhotoelectrocatalysisTi/TO2 nanotubes electrodesPhotoelectrocatalysis (PEC) has become an attractive technology to disinfect microorganisms from aqueous environments because of its ability to degrade microorganisms without producing any harmful by-products. PEC methodology was applied to inactivate Candida parapsilosis sensu stricto in planktonic and biofilm cells, and its efficiency was compared to that of photolytic and photocatalytic treatment. In the case of planktonic (free-floating) cells, PEC promoted the inactivation of 106 CFU mL-1 after 3 min of treatment, and the addition of silver nanoparticles to the Ti/TiO2 electrodes had virtually no effect on the disinfection period, although it caused a decrease by a factor of 1.5 in the mineralization efficiency. After 60, 10 and 60 min of treatment, PEC methodology reduced 106 CFU mL-1 on fungal biofilms and provided 71, 91 and 92% mineralization for biofilm cells performed on polyvinyl chloride (PVC), silicone, and polytetrafluoroethylene (PTFE), respectively. These results indicated that PEC is a promising process for disinfection of water contaminated with C. parapsilosis sensu stricto in both planktonic and biofilm cells.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Department of Clinical Analysis Clinical Mycology Laboratory UNESP - Universidade Estadual Paulista Faculdade de Ciências FarmacêuticasDepartment of Analytical Chemistry Institute of Chemistry UNESP - Universidade Estadual PaulistaDepartment of Chemistry UFMT - Universidade Federal de Mato GrossoDepartment of Clinical Analysis Clinical Mycology Laboratory UNESP - Universidade Estadual Paulista Faculdade de Ciências FarmacêuticasDepartment of Analytical Chemistry Institute of Chemistry UNESP - Universidade Estadual PaulistaFAPESP: 2009/09403-5FAPESP: 2011/12734-3FAPESP: 2012/01270-9Universidade Estadual Paulista (Unesp)UFMT - Universidade Federal de Mato GrossoPires, Regina H. [UNESP]Brugnera, Michelle F. [UNESP]Zanoni, Maria Valnice B. [UNESP]Giannini, Maria José S.M. [UNESP]2018-12-11T16:59:51Z2018-12-11T16:59:51Z2016-02-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article149-155application/pdfhttp://dx.doi.org/10.1016/j.apcata.2015.11.036Applied Catalysis A: General, v. 511, p. 149-155.0926-860Xhttp://hdl.handle.net/11449/17235310.1016/j.apcata.2015.11.0362-s2.0-849518485922-s2.0-84951848592.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengApplied Catalysis A: Generalinfo:eu-repo/semantics/openAccess2024-06-21T15:18:10Zoai:repositorio.unesp.br:11449/172353Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-06-21T15:18:10Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
title |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
spellingShingle |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms Pires, Regina H. [UNESP] Biofilm C. parapsilosis Photoelectrocatalysis Ti/TO2 nanotubes electrodes |
title_short |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
title_full |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
title_fullStr |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
title_full_unstemmed |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
title_sort |
Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms |
author |
Pires, Regina H. [UNESP] |
author_facet |
Pires, Regina H. [UNESP] Brugnera, Michelle F. [UNESP] Zanoni, Maria Valnice B. [UNESP] Giannini, Maria José S.M. [UNESP] |
author_role |
author |
author2 |
Brugnera, Michelle F. [UNESP] Zanoni, Maria Valnice B. [UNESP] Giannini, Maria José S.M. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) UFMT - Universidade Federal de Mato Grosso |
dc.contributor.author.fl_str_mv |
Pires, Regina H. [UNESP] Brugnera, Michelle F. [UNESP] Zanoni, Maria Valnice B. [UNESP] Giannini, Maria José S.M. [UNESP] |
dc.subject.por.fl_str_mv |
Biofilm C. parapsilosis Photoelectrocatalysis Ti/TO2 nanotubes electrodes |
topic |
Biofilm C. parapsilosis Photoelectrocatalysis Ti/TO2 nanotubes electrodes |
description |
Photoelectrocatalysis (PEC) has become an attractive technology to disinfect microorganisms from aqueous environments because of its ability to degrade microorganisms without producing any harmful by-products. PEC methodology was applied to inactivate Candida parapsilosis sensu stricto in planktonic and biofilm cells, and its efficiency was compared to that of photolytic and photocatalytic treatment. In the case of planktonic (free-floating) cells, PEC promoted the inactivation of 106 CFU mL-1 after 3 min of treatment, and the addition of silver nanoparticles to the Ti/TiO2 electrodes had virtually no effect on the disinfection period, although it caused a decrease by a factor of 1.5 in the mineralization efficiency. After 60, 10 and 60 min of treatment, PEC methodology reduced 106 CFU mL-1 on fungal biofilms and provided 71, 91 and 92% mineralization for biofilm cells performed on polyvinyl chloride (PVC), silicone, and polytetrafluoroethylene (PTFE), respectively. These results indicated that PEC is a promising process for disinfection of water contaminated with C. parapsilosis sensu stricto in both planktonic and biofilm cells. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-02-05 2018-12-11T16:59:51Z 2018-12-11T16:59:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.apcata.2015.11.036 Applied Catalysis A: General, v. 511, p. 149-155. 0926-860X http://hdl.handle.net/11449/172353 10.1016/j.apcata.2015.11.036 2-s2.0-84951848592 2-s2.0-84951848592.pdf |
url |
http://dx.doi.org/10.1016/j.apcata.2015.11.036 http://hdl.handle.net/11449/172353 |
identifier_str_mv |
Applied Catalysis A: General, v. 511, p. 149-155. 0926-860X 10.1016/j.apcata.2015.11.036 2-s2.0-84951848592 2-s2.0-84951848592.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Applied Catalysis A: General |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
149-155 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1803045195307024384 |