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Antioxidant and antimicrobial properties of PLA based active packaging with pomegranate peels and extract

2023-03-21Conference object Open access
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dc.contributor.authorAndrade, Mariana
dc.contributor.authorRodrigues, Pedro
dc.contributor.authorBarros, Carolina
dc.contributor.authorCruz, Vasco
dc.contributor.authorMachado, Ana
dc.contributor.authorBarbosa, Cássia
dc.contributor.authorCoelho, Anabela
dc.contributor.authorFurtado, Rosália
dc.contributor.authorCorreia, Cristina
dc.contributor.authorSaraiva, Margarida
dc.contributor.authorVilarinho, Fernanda
dc.contributor.authorRamos, Fernando
dc.contributor.authorSanches Silva, Ana
dc.date.accessioned2024-01-18T12:52:43Z
dc.date.available2024-01-18T12:52:43Z
dc.date.issued2023-03-21
dc.description.abstractActive food packaging’ primary goal is to extend foodstuffs’ shelf life, through a dynamic and continuous interaction between the package and the packaged food. In an emission active packaging, the objective is the gradual release of antioxidant and/or antimicrobial compounds into the food surface, to delay the natural foods’ degradation. The active compounds can be extracted from several sources, such as aromatic plants, seaweeds, fruits by-products, among others. Since 50% of pomegranate is composed by peels, and since it is mainly consumed in juice and jam form, pomegranate peels may represent a considerable asset for the extraction of such compounds. The principal objective of this work was to evaluate the antioxidant and antimicrobial properties of polylactic-based active packaging incorporated with 3% (w/w) of pomegranate peels (PLA/3PP) and 3% (w/w) of pomegranate peels extract (PLA/3PPE). For the in vitro antioxidant activity evaluation, 9.08 cm2 of films were immersed in the food simulator, ethanol 95% (v/v), at 40 °C for 10 days. Then, the DPPH radical scavenging assay was performed, as well as the total content of phenolic compounds, total content in flavonoids, content in punicalagin (A+B) and ellagic acid were determined. Also, to fully determine the total content in punicalagin (A+B) and ellagic acid, the films were kept in methanol at 25 and 40 °C for 24 h. The antimicrobial activity of the films was evaluated with Listeria monocytogenes, Staphylococcus aureus, Enterococcus faecalis, and Escherichia coli, in accordance with ISO 22196:2011. Results showed that PLA/3PPE presented a higher antioxidant potential and higher content in phenolic compounds and flavonoids. Only ellagic acid was detected in the active PLA-based films. Regarding the antimicrobial activity, both films presented antimicrobial activity against S. aureus.pt_PT
dc.description.sponsorshipCássia H. Barbosa thanks the Fundação para a Ciência e Tecnologia (FCT), Portugal for the Ph.D. Grant 2021.08154.BD. This work was carried out under the MobFOOD Project (POCI-01-0247-FEDER-024524 and LISBOA-01-0247-FEDER-024524), funded by POCI (Operational Programme“Competitiveness and Internationalization”) and POR Lisboa (Lisbon Regional Operational Programme), through ANI, and by the Programa de Cooperación Interreg-A España–Portugal (POCTEP) 2014–2020 (project 0377_IBERPHENOL_6_E). This research was also funded by PT national funds (FCT/MCTES, Fundação para a Ciência e Tecnologia and Ministério da Ciência, Tecnologia e Ensino Superior) through the grant UIDB/00211/2020).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/8925
dc.language.isoengpt_PT
dc.relationCenter for the Study of Animal Science
dc.subjectActive Food Packagingpt_PT
dc.subjectActive Compoundspt_PT
dc.subjectSegurança Alimentarpt_PT
dc.titleAntioxidant and antimicrobial properties of PLA based active packaging with pomegranate peels and extractpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleCenter for the Study of Animal Science
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00211%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/2021.08154.BD/PT
oaire.citation.conferencePlacePorto, Portugalpt_PT
oaire.citation.title2.ª Conferência Dare2change: Innovation-Driven Agrifood Business, 21 março 2023pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isProjectOfPublication69b75eb9-6f25-4ad8-98db-6cc7e9bcdcc7
relation.isProjectOfPublication4bf6b417-9ca7-4789-9d0c-4c83efb0fd9a
relation.isProjectOfPublication.latestForDiscovery69b75eb9-6f25-4ad8-98db-6cc7e9bcdcc7

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