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dc.contributor.author
Arreche, Romina
dc.contributor.author
Bellotti, Natalia
dc.contributor.author
Blanco, Mirta Noemi
dc.contributor.author
Vazquez, Patricia Graciela
dc.date.available
2017-12-11T14:00:16Z
dc.date.issued
2015-04-24
dc.identifier.citation
Arreche, Romina; Bellotti, Natalia; Blanco, Mirta Noemi; Vazquez, Patricia Graciela; Improved antimicrobial activity of silica-Cu using a heteropolyacid and different precursors by sol-gel: synthesis and characterization; Springer; Journal of Sol-Gel Science and Technology; 75; 2; 24-4-2015; 374-382
dc.identifier.issn
0928-0707
dc.identifier.uri
http://hdl.handle.net/11336/30105
dc.description.abstract
Antimicrobial coatings are used to avoid the proliferation of fungi and bacteria inside urban buildings by incorporating low concentrations of antimicrobial agents (biocides). This study is focused on evaluating the antifungal activity of copper (II) supported on a silica matrix, and as counter-cation of a heteropolyacid, obtained from the sol-gel method using various catalysts, against two fungal isolates. The fungi used in this evaluation were Alternaria alternata and Chaetomium globosum isolated by routine microbiological techniques from biodeteriorated paints films. In all cases, fungi were selected due to their ability to grow on the paint films and their negative impact on human health. First, silicas were prepared using tetraethylorthosilicate and methyl trimethoxysilane as precursors and acetic acid, hydrochloric acid as catalysts of the hydrolysis reaction of the alkoxide. The effect of addition of copper (II) in the form of copper nitrate was studied. With respect to the morphology of the silica, most of them are similar, between pure and modified silica, in all cases. Once the stage of the synthesis and characterization of the prepared materials was performed, six of them were selected to evaluate their antifungal activity by agar plate inhibition test against both fungi of interest (A. alternata and C. globosum), and the percent inhibition was determined in each case. Tested Cu-based solids were shown to have a higher antifungal activity because they completely inhibit the growth of both fungi with lower concentrations relative to its control. This work was performed as a preliminary study, in order to guide the selection of a suitable organic biocide from a list of possible antifungal agents.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Antimicrobial Coatings
dc.subject
Silica
dc.subject
Copper
dc.subject
Sol-Gel Method
dc.subject
Antifungal Activity
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.subject.classification
Otras Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Improved antimicrobial activity of silica-Cu using a heteropolyacid and different precursors by sol-gel: synthesis and characterization
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-08-11T15:08:00Z
dc.identifier.eissn
1573-4846
dc.journal.volume
75
dc.journal.number
2
dc.journal.pagination
374-382
dc.journal.pais
Alemania
dc.journal.ciudad
Berlin
dc.description.fil
Fil: Arreche, Romina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
dc.description.fil
Fil: Bellotti, Natalia. Provincia de Buenos Aires. Gobernación. Comision de Invest.científicas. Centro de Investigaciones En Tecnología de Pinturas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - la Plata. Centro de Investigaciones En Tecnología de Pinturas; Argentina
dc.description.fil
Fil: Blanco, Mirta Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
dc.description.fil
Fil: Vazquez, Patricia Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Ciencias Aplicadas ; Argentina
dc.journal.title
Journal of Sol-Gel Science and Technology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10971-015-3710-8
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10971-015-3710-8


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