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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleEffect of calcium and/or barium crosslinking on the physical and antimicrobial properties of natamycin-loaded alginate filmspt_BR
dc.contributor.authorBierhalz, ACKpt_BR
dc.contributor.authorda Silva, MApt_BR
dc.contributor.authorBraga, MEMpt_BR
dc.contributor.authorSousa, HJCpt_BR
dc.contributor.authorKieckbusch, TGpt_BR
unicamp.author.emailmarabraga@eq.uc.ptpt_BR
unicamp.author.emailtheo@feq.unicamp.brpt_BR
unicamp.authorBierhalz, Andrea C. K. da Silva, Mariana A. Kieckbusch, Theo G. Univ Estadual Campinas, UNICAMP, Sch Chem Engn, DEMBio, BR-13083852 Campinas, SP, Brazilpt_BR
unicamp.authorBraga, Mara E. M. Sousa, Herminio J. C. Univ Coimbra, FCTUC, Dept Chem Engn, CIEPQPF, P-3030790 Coimbra, Portugalpt_BR
dc.subjectAntimicrobial filmspt_BR
dc.subjectAlginatept_BR
dc.subjectNatamycinpt_BR
dc.subjectCrosslinkingpt_BR
dc.subjectDiffusivitypt_BR
dc.subject.wosWater Sorption Isothermspt_BR
dc.subject.wosMechanical-propertiespt_BR
dc.subject.wosPotassium Sorbatept_BR
dc.subject.wosActive Filmspt_BR
dc.subject.wosEdible Filmspt_BR
dc.subject.wosBarrier Propertiespt_BR
dc.subject.wosReleasept_BR
dc.subject.wosPermeabilitypt_BR
dc.subject.wosPlasticizerpt_BR
dc.subject.wosProteinpt_BR
dc.description.abstractThe preparation of alginate films with suitable properties requires a two-step contact with reticulating agents: initially a weakly structured pre-film is formatted which is further crosslinked in a second stage by immersion in a more concentrated solution. The present work evaluated the effects of a combined crosslinking procedure using calcium and barium ions on the physical and morphological properties of alginate-based films containing natamycin as antimicrobial agent. The release behavior of natamycin in water was evaluated as well as the antimicrobial activity against four target microorganisms, which are common cheese product contaminants. Films attributes were affected by the type of ion used in the second stage while the natamycin release rate and the antimicrobial activity were influenced by the ion used in the first stage. Films crosslinked with Ba2+ in the first and Ca2+ in the second stage (Ba-Ca films) exhibited physical properties very similar to films crosslinked with calcium in both stages. Release kinetics of natamycin in water fitted well to Fick's second law diffusional model, with effective diffusivity values ranging from 0.40 x 10(-11) to 1.74 x 10(-11) cm(-2)/s. Ba-Ca films presented the lowest natamycin diffusion coefficient and the smallest inhibition zone diameter against the four microorganisms tested. (C) 2014 Elsevier Ltd. All rights reserved.pt
dc.relation.ispartofLwt-food Science And Technologypt_BR
dc.relation.ispartofabbreviationLWT-Food Sci. Technol.pt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryHolandapt_BR
dc.publisherElsevier Science Bvpt_BR
dc.date.issued2014pt_BR
dc.date.monthofcirculationJULpt_BR
dc.identifier.citationLwt-food Science And Technology. Elsevier Science Bv, v. 57, n. 2, n. 494, n. 501, 2014.pt_BR
dc.language.isoenpt_BR
dc.description.volume57pt_BR
dc.description.issuenumber2pt_BR
dc.description.firstpage494pt_BR
dc.description.lastpage501pt_BR
dc.rightsfechadopt_BR
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policypt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn0023-6438pt_BR
dc.identifier.eissn1096-1127pt_BR
dc.identifier.wosidWOS:000334973400006pt_BR
dc.identifier.doi10.1016/j.lwt.2014.02.021pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipPrograma Ciencia (Portugal)pt_BR
dc.description.sponsorshipCOMPETE (Portugal) [PEst-C/EQB/UI0102/2011]pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsordocumentnumberCOMPETE (Portugal) [PEst-C/EQB/UI0102/2011]pt
dc.date.available2014-07-30T17:05:23Z
dc.date.available2015-11-26T17:43:42Z-
dc.date.accessioned2014-07-30T17:05:23Z
dc.date.accessioned2015-11-26T17:43:42Z-
dc.description.provenanceMade available in DSpace on 2014-07-30T17:05:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:43:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/63777
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/63777-
Appears in Collections:Unicamp - Artigos e Outros Documentos

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