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Reversible bleaching of betalains induced by metals and application to the fluorescent determination of anthrax biomarker

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dc.contributor.authorGuerrero Rubio, M. Alejandra
dc.contributor.authorMartínez Zapata, Joaquín
dc.contributor.authorHenarejos Escudero, Paula
dc.contributor.authorGandía Herrero, Fernando
dc.contributor.authorGarcía Carmona, Francisco
dc.contributor.departmentBioquímica y Biología Molecular Aes
dc.date.accessioned2025-06-05T10:36:20Z
dc.date.available2025-06-05T10:36:20Z
dc.date.issued2020-05-01
dc.description© 2020 Elsevier Ltd. This document is the Published version of a Published Work that appeared in final form in Dyes and Pigments. To access the final edited and published work see https://doi.org/10.1016/j.dyepig.2020.108493es
dc.description.abstractBetalains are antioxidant pigments of plant origin that are found in nature in the order Caryophyllales. They are classified into two groups: betacyanins, which present a violet coloration, and betaxanthins, fluorescent betalains with yellow coloration. In this work, the effect of metals, such as copper and europium, on the spectroscopic properties of betalains is studied. For the first time, the reversibility of spectral changes in fluorescence and absorbance is considered after the addition of chelating substances. These results explain the general bleaching of betalains by metals. The reversibility of the betalain-metal complexes is applied to the fluorescent detection of the presence of spores from Bacillus by the interaction of the complexes with the chelator dipicolinic acid, which is the main and characteristic component of endospores. This fast, economic method allows the detection of spores below the infective dose for anthrax by using a flower pigment present in Mirabilis jalapa.es
dc.formatapplication/pdfes
dc.format.extent11es
dc.identifier.citationDyes and Pigments, 2020, Vol. 180 : 108493
dc.identifier.doihttps://doi.org/10.1016/j.dyepig.2020.108493
dc.identifier.issnPrint: 0143-7208
dc.identifier.issnElectronic: 1873-3743
dc.identifier.urihttp://hdl.handle.net/10201/155701
dc.languageenges
dc.publisherElsevier
dc.relationThis work was supported by the Spanish Ministry of Economy and Competitiveness (MEC-FEDER, Spain) (Project AGL2017-86526) and by the “Programa de Ayudas a Grupos de Excelencia de la Región de Murcia, Fundación Séneca, Agencia de Ciencia y Tecnología de la Región de Murcia” (Project 19893/GERM/15). M.A.G.-R. holds a contract financed by MEC-FEDER (Spain). P.H.-E. holds a contract financed by the University of Murcia (Spain).es
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0143720820305441
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectAnthraxes
dc.subjectBetalainses
dc.subjectBiosensores
dc.subjectDipicolinic acides
dc.subjectFluorescencees
dc.subject.otherCDU::5 - Ciencias puras y naturales::57 - Biología::577 - Bioquímica. Biología molecular. Biofísicaes
dc.titleReversible bleaching of betalains induced by metals and application to the fluorescent determination of anthrax biomarkeres
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
relation.isAuthorOfPublicationdb7a1a52-fec7-48eb-91e0-abe5e715b483
relation.isAuthorOfPublication77e02ea7-d1b7-4992-bc4a-c6e8c0cce1a8
relation.isAuthorOfPublication.latestForDiscoverydb7a1a52-fec7-48eb-91e0-abe5e715b483
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