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Bioactive Electrospun Fibers of Poly(ε-Caprolactone) Incorporating α-Tocopherol for Food Packaging Applications

2021-09-10Artigo científico Acesso aberto
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datacite.subject.fosCiências Naturais::Ciências Químicas
datacite.subject.fosCiências Naturais::Ciências Biológicas
datacite.subject.fosCiências Médicas::Outras Ciências Médicas
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg12:Produção e Consumo Sustentáveis
dc.contributor.authorDumitriu, Raluca P.
dc.contributor.authorStoleru, Elena
dc.contributor.authorMitchell, Geoffrey R.
dc.contributor.authorVasile, Cornelia
dc.contributor.authorBrebu, Mihai
dc.date.accessioned2026-02-06T16:33:10Z
dc.date.available2026-02-06T16:33:10Z
dc.date.issued2021-09-10
dc.description.abstractAntioxidant activity is an important feature for food contact materials such as packaging, aiming to preserve freshness and retard food spoilage. Common bioactive agents are highly susceptible to various forms of degradation; therefore, protection is required to maintain functionality and bioavailability. Poly(ε-caprolactone) (PCL), a biodegradable GRAS labeled polymer, was used in this study for encapsulation of α-tocopherol antioxidant, a major component of vitamin E, in the form of electrospun fibers. Rheological properties of the fiber forming solutions, which determine the electrospinning behavior, were correlated with the properties of electrospun fibers, e.g., morphology and surface properties. Interactions through hydrogen bonds were evidenced between the two components. These have strong effect on structuration of macromolecular chains, especially at low α-tocopherol amounts, decreasing viscosity and elastic modulus. Intra-molecular interactions in PCL strengthen at high α-tocopherol amounts due to decreased solvation, allowing good structural recovery after cease of mechanical stress. Morphologically homogeneous electrospun fibers were obtained, with ~6 µm average diameter. The obtained fibers were highly hydrophobic, with fast release in 95% ethanol as alternative simulant for fatty foods. This induced good in vitro antioxidant activity and significant in vivo reduction of microbial growth on cheese, as determined by respirometry. Therefore, the electrospun fibers from PCL entrapping α-tocopherol as bioactive agent showed potential use in food packaging materials.eng
dc.description.sponsorshipFunding: This research was funded by the grant from the, Ministry of Research, Innovation and Digitization, CNCS/CCCDI-UEFISCDI, project code PN-III-P1-1.1-PD-2019-1101, contract number PD 31/2020, within PNCDI III. R.P.D. benefitted of financial support from the European Community through an STSM in the framework of COST action FA0904. Acknowledgments: Support from Gabriela Elena Hitruc with AFM investigations is gratefully acknowledged.
dc.identifier.citationDumitriu, R.P.; Stoleru, E.; Mitchell, G.R.; Vasile, C.; Brebu, M. Bioactive Electrospun Fibers of Poly("-Caprolactone) Incorporating -Tocopherol for Food Packaging Applications. Molecules 2021, 26, 5498. https://doi.org/10.3390/ molecules26185498.
dc.identifier.doi10.3390/molecules26185498
dc.identifier.eissn1420-3049
dc.identifier.urihttp://hdl.handle.net/10400.8/15565
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relation.hasversionhttps://www.mdpi.com/1420-3049/26/18/5498
dc.relation.ispartofMolecules
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectelectrospun fibers
dc.subjecthydrophobic coating
dc.subjectrheology
dc.subjectfood simulant migration
dc.subjectfood spoilage
dc.titleBioactive Electrospun Fibers of Poly(ε-Caprolactone) Incorporating α-Tocopherol for Food Packaging Applicationseng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage17
oaire.citation.issue18
oaire.citation.startPage1
oaire.citation.titleMolecules
oaire.citation.volume26
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameMitchell
person.givenNameGeoffrey
person.identifier166356
person.identifier.ciencia-idE41A-ABDD-1FC7
person.identifier.orcid0000-0001-7977-7610
person.identifier.scopus-author-id7403103397
relation.isAuthorOfPublication48c8066b-023e-4405-b462-49d28af000d1
relation.isAuthorOfPublication.latestForDiscovery48c8066b-023e-4405-b462-49d28af000d1

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Antioxidant activity is an important feature for food contact materials such as packaging, aiming to preserve freshness and retard food spoilage. Common bioactive agents are highly susceptible to various forms of degradation; therefore, protection is required to maintain functionality and bioavailability. Poly(ε-caprolactone) (PCL), a biodegradable GRAS labeled polymer, was used in this study for encapsulation of α-tocopherol antioxidant, a major component of vitamin E, in the form of electrospun fibers. Rheological properties of the fiber forming solutions, which determine the electrospinning behavior, were correlated with the properties of electrospun fibers, e.g., morphology and surface properties. Interactions through hydrogen bonds were evidenced between the two components. These have strong effect on structuration of macromolecular chains, especially at low α-tocopherol amounts, decreasing viscosity and elastic modulus. Intra-molecular interactions in PCL strengthen at high α-tocopherol amounts due to decreased solvation, allowing good structural recovery after cease of mechanical stress. Morphologically homogeneous electrospun fibers were obtained, with ~6 µm average diameter. The obtained fibers were highly hydrophobic, with fast release in 95% ethanol as alternative simulant for fatty foods. This induced good in vitro antioxidant activity and significant in vivo reduction of microbial growth on cheese, as determined by respirometry. Therefore, the electrospun fibers from PCL entrapping α-tocopherol as bioactive agent showed potential use in food packaging materials.
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