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Influence of ethanol and glycerol concentration over functional and structural properties of zein-oleic acid films

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dc.contributor.authorPena-Serna, Carolina [UNESP]
dc.contributor.authorLopes-Filho, José Francisco [UNESP]
dc.contributor.institutionUniversity of Antioquia
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:30:52Z
dc.date.available2014-05-27T11:30:52Z
dc.date.issued2013-11-15
dc.description.abstractThis study was performed in order to determine the effect of the addition of different concentrations of glycerol and ethanol over functional and structural properties of zein-oleic acid films. Films were prepared from zein and oleic acid formulations, containing: 0, 10, 20 and 30% (w/w) of glycerol as plasticizer and 75, 80, 85, 90 and 95% (v/v) of ethanol as zein solvent. Water vapor permeability (WVP) at 4 and 24 C, opacity, water solubility and structural behavior of the film were assessed. The film water barrier properties, WVP and water solubility, were increased when higher ethanol concentration and lower glycerol concentration were used. Furthermore, WVP at 4 C was lower than WVP at 24 C due to the crystalline solid state of oleic acid at lower temperatures. Likewise, opacity, homogeneity and structure of the composite film were improved as ethanol increased and glycerol lowered. © 2013 Elsevier B.V. All rights reserved.en
dc.description.affiliationAgrarian Sciences Faculty University of Antioquia, Medellin
dc.description.affiliationFood Engineering and Technology Department Universidade Estadual Paulista, São José do Rio Preto
dc.description.affiliationUnespFood Engineering and Technology Department Universidade Estadual Paulista, São José do Rio Preto
dc.format.extent580-585
dc.identifierhttp://dx.doi.org/10.1016/j.matchemphys.2013.07.056
dc.identifier.citationMaterials Chemistry and Physics, v. 142, n. 2-3, p. 580-585, 2013.
dc.identifier.doi10.1016/j.matchemphys.2013.07.056
dc.identifier.issn0254-0584
dc.identifier.scopus2-s2.0-84884592899
dc.identifier.urihttp://hdl.handle.net/11449/76908
dc.identifier.wosWOS:000326767500018
dc.language.isoeng
dc.relation.ispartofMaterials Chemistry and Physics
dc.relation.ispartofjcr2.210
dc.relation.ispartofsjr0,615
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBiomaterial
dc.subjectDiffusion
dc.subjectElectron microscopy
dc.subjectOptical microscopy
dc.subjectSurface properties
dc.subjectThin film
dc.subjectCrystalline solids
dc.subjectEthanol concentrations
dc.subjectGlycerol concentration
dc.subjectLower temperatures
dc.subjectStructural behaviors
dc.subjectWater barrier properties
dc.subjectWater solubilities
dc.subjectWater vapor permeability
dc.subjectBiological materials
dc.subjectBiomaterials
dc.subjectComposite films
dc.subjectEthanol
dc.subjectGlycerol
dc.subjectOleic acid
dc.subjectOpacity
dc.subjectSolubility
dc.subjectStructural properties
dc.subjectThin films
dc.subjectOrganic solvents
dc.titleInfluence of ethanol and glycerol concentration over functional and structural properties of zein-oleic acid filmsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dspace.entity.typePublication
unesp.author.orcid0000-0002-8008-005X[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt
unesp.departmentEngenharia e Tecnologia de Alimentos - IBILCEpt

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São José do Rio Preto - IBILCE - Instituto de Biociências, Letras e Ciências Exatas