Show simple item record

dc.contributor.authorFrancesko, Antonio
dc.contributor.authorBlandon, Lucas
dc.contributor.authorVázquez, Mario
dc.contributor.authorPetkova Petkova, Petya Stoyanova
dc.contributor.authorMorató Farreras, Jordi
dc.contributor.authorPfeifer, Annett
dc.contributor.authorHeinze, Thomas
dc.contributor.authorMendoza Gómez, Ernesto
dc.contributor.authorTzanov, Tzanko
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Òptica i Optometria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2015-09-16T07:55:20Z
dc.date.available2016-05-02T00:30:48Z
dc.date.created2015-05-13
dc.date.issued2015-05-13
dc.identifier.citationFrancesko, A., Blandon, L., Vázquez, M., Petkova, P., Morato, J., Pfeifer, A., Heinze, T., Mendoza, E., Tzanov, T. Enzymatic functionalization of cork surface with antimicrobial hybrid biopolymer/silver nanoparticles. "ACS Applied Materials & Interfaces", 13 Maig 2015, núm. 18, p. 9792-9799.
dc.identifier.issn1944-8252
dc.identifier.urihttp://hdl.handle.net/2117/76833
dc.description.abstractLaccase-assisted assembling of hybrid biopolymer-silver nanoparticles and cork matrices into an antimicrobial material with potential for water remediation is herein described. Amino-functional biopolymers were first used as doping agents to stabilize concentrated colloidal dispersions of silver nanoparticles (AgNP), additionally providing the particles with functionalities for covalent immobilization onto cork to impart a durable antibacterial effect. The solvent-free AgNP synthesis by chemical reduction was carried out in the presence of chitosan (CS) or 6-deoxy-6-(omega-aminoethyl) aminocellulose (AC), leading to simultaneous AgNP biofunctionalization. This approach resulted in concentrated hybrid NP dispersion stable to aggregation and with hydrodynamic radius of particles of about 250 nm. Moreover, laccase enabled coupling between the phenolic groups in cork and amino moieties in the biopolymer-doped AgNP for permanent modification of the material. The antibacterial efficiency of the functionalized cork matrices, aimed as adsorbents for wastewater treatment, was evaluated against Escherichia coli and Staphylococcus aureus during 5 days in conditions mimicking those in constructed wetlands. Both intrinsically antimicrobial CS and AC contributed to the bactericidal effect of the enzymatically grafted on cork AgNP. In contrast, unmodified AgNP were easily washed off from the material, confirming that the biopolymers potentiated a durable antibacterial functionalization of the cork matrices.
dc.format.extent8 p.
dc.language.isoeng
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria química
dc.subject.lcshNanoparticles
dc.subject.lcshSilver
dc.subject.lcshBiopolymers
dc.subject.otheramino-functional biopolymers
dc.subject.othersilver nanoparticles
dc.subject.othercork
dc.subject.otherenzymatic grafting
dc.subject.otherantimicrobial activity
dc.subject.otherflow constructed wetlands
dc.subject.othersolid-state c-13-nmr
dc.subject.otherquercus-suber l.
dc.subject.othersilver nanoparticles
dc.subject.otherchitosan
dc.subject.otherwater
dc.subject.othernanocomposites
dc.subject.othervariability
dc.subject.otheradsorption
dc.subject.otherbiosorbent
dc.titleEnzymatic functionalization of cork surface with antimicrobial hybrid biopolymer/silver nanoparticles
dc.typeArticle
dc.subject.lemacNanopartícules
dc.subject.lemacPlata
dc.subject.lemacBiopolímers
dc.contributor.groupUniversitat Politècnica de Catalunya. GBMI - Grup de Biotecnologia Molecular i Industrial
dc.contributor.groupUniversitat Politècnica de Catalunya. SUMMLab - Sustainability Measurement and Modeling Lab
dc.identifier.doi10.1021/acsami.5b01670
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://pubs.acs.org/doi/abs/10.1021/acsami.5b01670
dc.rights.accessOpen Access
local.identifier.drac15600073
dc.description.versionPostprint (author’s final draft)
local.citation.authorFrancesko, A.; Blandon, L.; Vázquez, M.; Petkova, P.; Morato, J.; Pfeifer, A.; Heinze, T.; Mendoza, E.; Tzanov, T.
local.citation.publicationNameACS Applied Materials & Interfaces
local.citation.volume7
local.citation.number18
local.citation.startingPage9792
local.citation.endingPage9799


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain