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dc.contributorUniversitat Ramon Llull. IQS
dc.contributor.authorNonell, Santi
dc.contributor.authorBresolí Obach, Roger
dc.contributor.authorAgut Bonsfills, Montserrat
dc.contributor.authorMarioni, Juliana
dc.contributor.authorComini, Laura R.
dc.contributor.authorCabrera, José L.
dc.contributor.authorParaje, María G.
dc.contributor.authorNúñez Montoya, Susana C.
dc.date.accessioned2021-01-18T13:44:49Z
dc.date.accessioned2023-07-13T05:46:50Z
dc.date.available2021-01-18T13:44:49Z
dc.date.available2023-07-13T05:46:50Z
dc.date.issued2017-07
dc.identifier.urihttp://hdl.handle.net/20.500.14342/1154
dc.description.abstractThe photoprocesses involved in the photo-induced Candida tropicalis biofilm reduction by two natural anthraquinones (AQs), rubiadin (1) and rubiadin-1-methyl ether (2), were examined. Production of singlet oxygen (1O2) and of superoxide radical anion (O2•−) was studied. Although it was not possible to detect the triplet state absorption of any AQs in biofilms, observation of 1O2 phosphorescence incubated with deuterated Phosphate Buffer Solution, indicated that this species is actually formed in biofilms. 2 was accumulated in the biofilm to a greater extent than 1 and produced measurable amounts of O2•− after 3h incubation in biofilms. The effect of reactive oxygen species scavengers on the photo-induced biofilm reduction showed that Tiron (a specific O2•− scavenger) is most effective than sodium azide (a specific 1O2 quencher). This suggests that O2•− formed by electron transfer quenching of the AQs excited states, is the main photosensitizing mechanism involved in the photo-induced antibiofilm activity, whereas 1O2 participation seems of lesser importance.eng
dc.format.extent14 p.cat
dc.language.isoengcat
dc.publisherPublic Library of Science (PLoS)cat
dc.relation.ispartofPLoS ONE. Vol.12, n.7 (2017), e0181517cat
dc.rightsAttribution 4.0 International
dc.rights© L'autor/a
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceRECERCAT (Dipòsit de la Recerca de Catalunya)
dc.subject.otherFotobiologiacat
dc.subject.otherLlumcat
dc.subject.otherBiofilmscat
dc.subject.otherÈterscat
dc.subject.otherLlevatscat
dc.subject.otherFosforescènciacat
dc.subject.otherFluorescènciacat
dc.subject.otherEspectre d'absorciócat
dc.subject.otherEtherscat
dc.subject.otherYeastcat
dc.subject.otherPhosphorescencecat
dc.subject.otherSodium azidescat
dc.subject.otherFluorescencecat
dc.subject.otherAbsorption spectracat
dc.subject.otherLightcat
dc.titleOn the mechanism of Candida tropicalis biofilm reduction by the combined action of naturally-occurring anthraquinones and blue lightcat
dc.typeinfo:eu-repo/semantics/articlecat
dc.typeinfo:eu-repo/semantics/publishedVersioncat
dc.rights.accessLevelinfo:eu-repo/semantics/openAccess
dc.embargo.termscapcat
dc.subject.udc535 - Òptica
dc.subject.udc577
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0181517cat
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO/PN I+D/CTQ2013-48767-C3-1-Rcat
dc.relation.projectIDinfo:eu-repo/grantAgreement/FONCYT/PICT 2014 n°2204cat
dc.relation.projectIDinfo:eu-repo/grantAgreement/CONICET/PIP 2013-2015cat


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Attribution 4.0 International
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