Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/106584
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ramos, Marina | - |
dc.contributor.author | Fortunati, Elena | - |
dc.contributor.author | Beltrán, Ana | - |
dc.contributor.author | Peltzer, Mercedes A. | - |
dc.contributor.author | Cristofaro, Francesco | - |
dc.contributor.author | Visai, Livia | - |
dc.contributor.author | Valente, Artur J. M. | - |
dc.contributor.author | Jiménez, Alfonso | - |
dc.contributor.author | Kenny, José María | - |
dc.contributor.author | Garrigós, María Carmen | - |
dc.date.accessioned | 2023-04-12T08:14:48Z | - |
dc.date.available | 2023-04-12T08:14:48Z | - |
dc.date.issued | 2020-08-20 | - |
dc.identifier.issn | 2073-4360 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/106584 | - |
dc.description.abstract | Nano-biocomposite films based on poly (lactic acid) (PLA) were prepared by adding thymol (8 wt.%) and a commercial montmorillonite (D43B) at different concentrations (2.5 and 5 wt.%). The antioxidant, antimicrobial, and disintegration properties of all films were determined. A kinetic study was carried out to evaluate the thymol release from the polymer matrix into ethanol 10% (v/v) as food simulant. The nanostructured networks formed in binary and ternary systems were of interest in controlling the release of thymol into the food simulant. The results indicated that the diffusion of thymol through the PLA matrix was influenced by the presence of the nanoclay. Disintegration tests demonstrated that the incorporation of both additives promoted the breakdown of the polymer matrix due to the presence of the reactive hydroxyl group in the thymol structure and ammonium groups in D43B. Active films containing thymol and D43B efficiently enhanced the antioxidant activity (inhibition values higher than 77%) of the nano-biocomposites. Finally, the addition of 8 wt.% thymol and 2.5 wt.% D43B significantly increased the antibacterial activity against Escherichia coli and Staphylococcus aureus 8325-4, resulting in a clear advantage to improve the shelf-life of perishable packaged food. | pt |
dc.language.iso | eng | pt |
dc.publisher | MDPI | pt |
dc.relation | Spanish Ministry of Economy and Competitiveness (MAT2017-84909-C2-1-R) | pt |
dc.relation | Generalitat Valenciana (IDIFEDER/2018/007) | pt |
dc.relation | University of Alicante (Spain) for the UAFPU2011-48539721S predoctoral research grant | pt |
dc.relation | UID/QUI/UI0313/2020 | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | PLA | pt |
dc.subject | nanocomposites | pt |
dc.subject | functional properties | pt |
dc.subject | thymol | pt |
dc.subject | migration | pt |
dc.subject | films | pt |
dc.title | Controlled Release, Disintegration, Antioxidant, and Antimicrobial Properties of Poly (Lactic Acid)/Thymol/Nanoclay Composites | pt |
dc.type | article | - |
degois.publication.firstPage | 1878 | pt |
degois.publication.issue | 9 | pt |
degois.publication.title | Polymers | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.3390/polym12091878 | pt |
degois.publication.volume | 12 | pt |
dc.date.embargo | 2020-08-20 | * |
uc.date.periodoEmbargo | 0 | pt |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | Com Texto completo | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-4612-7686 | - |
Appears in Collections: | I&D CQC - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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Controlled-release-disintegration-antioxidant-and-antimicrobial-properties-of-poly-lactic-acidthymolnanoclay-compositesPolymers.pdf | 25.2 MB | Adobe PDF | View/Open |
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