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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effectiveness of photoelectrocatalysis treatment for the inactivation of Candida parapsilosis sensu stricto in planktonic cultures and biofilms

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Author(s):
Pires, Regina H. [1] ; Brugnera, Michelle F. [2, 3] ; Zanoni, Maria Valnice B. [2] ; Giannini, Maria Jose S. M. [1]
Total Authors: 4
Affiliation:
[1] UNESP Univ Estadual Paulista, Dept Clin Anal, Clin Mycol Lab, Fac Ciencias Farmaceut, Araraquara, SP - Brazil
[2] UNESP Univ Estadual Paulista, Dept Analyt Chem, Inst Chem, Araraquara, SP - Brazil
[3] UFMT Univ Fed Mato Grosso, Dept Chem, Cuiaba, MT - Brazil
Total Affiliations: 3
Document type: Journal article
Source: APPLIED CATALYSIS A-GENERAL; v. 511, p. 149-155, FEB 5 2016.
Web of Science Citations: 6
Abstract

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 10(6) 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 10(6) 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. (C) 2015 Published by Elsevier B.V. (AU)

FAPESP's process: 11/12734-3 - Candida parapsilosis and C. orthopsilosis isolates from hemodialysis water. Application of proteomic and photocatalysis methodologies.
Grantee:Regina Helena Pires
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 09/09403-5 - Electroanalytical and chromatographic methods applied in the analysis of mycobacteria and photoeletrocatalytic disinfection of mycobacteria and candidas using electrodes of Ti/TiO2 and Ti/TiO2-Ag nanotubes
Grantee:Michelle Fernanda Brugnera
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 12/01270-9 - Candida parapsilosis and C. orthopsilosis isolates from hemodialysis water: application of proteomic and photocatalysis methodologies
Grantee:Maria José Soares Mendes Giannini
Support Opportunities: Regular Research Grants