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Evaluation of antimicrobial and antioxidant activities of alginate edible coatings incorporated with plant extracts

2023-09-23Journal article Open access
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dc.contributor.authorLopes, Ana I.
dc.contributor.authorMelo, Adma
dc.contributor.authorCaleja, Cristina
dc.contributor.authorPereira, Eliana
dc.contributor.authorFinimundy, Tiane C.
dc.contributor.authorAfonso, Tiago B.
dc.contributor.authorSilva, Sara
dc.contributor.authorIvanov, Marija
dc.contributor.authorSoković, Marina
dc.contributor.authorTavaria, Freni K.
dc.contributor.authorBarros, Lillian
dc.contributor.authorPintado, Manuela
dc.date.accessioned2023-10-12T16:48:06Z
dc.date.available2023-10-12T16:48:06Z
dc.date.issued2023-09-23
dc.description.abstractPlant extracts (PEs) are natural substances that perform interesting bioactivities. However, they have some limitations. In this work, PEs from licorice, eucalyptus, sage, and thyme were produced and characterized. These extracts showed good bioactive properties. Alginate-based edible coatings and films incorporated with the extracts were produced and their antimicrobial and antioxidant properties were determined. The results showed that the coatings completely inhibited or reduced the growth of all bacteria (E. coli, P. aeruginosa, B. cereus, L. monocytogenes, and S. aureus), except the coating with sage extract. However, only the films incorporated with licorice and eucalyptus could inhibit the growth of Gram-positive bacteria and none of the films were able to inhibit Gram-negative bacteria. The film incorporated with sage extract was the one with the best antifungal property. All films possess a good antioxidant property (ABTS: 942.52–5654.62; DPPH: 1040.67–5162.93 Trolox equivalents (µM)/mg film). Based on the results, it is possible to conclude that alginate coatings and films with PEs present good bioactive properties and can potentially be used as new, biodegradable packages. However, further experiments need to be performed to assess their safety profile, and to prove that they can be a real alternative to traditional food packaging.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/coatings13091487pt_PT
dc.identifier.eid85172774985
dc.identifier.issn2079-6412
dc.identifier.urihttp://hdl.handle.net/10400.14/42850
dc.identifier.wos001071381900001
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAntimicrobial activitypt_PT
dc.subjectAntioxidant activitypt_PT
dc.subjectEdible coatingspt_PT
dc.subjectEdible filmspt_PT
dc.subjectPlant extractspt_PT
dc.titleEvaluation of antimicrobial and antioxidant activities of alginate edible coatings incorporated with plant extractspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue9pt_PT
oaire.citation.titleCoatingspt_PT
oaire.citation.volume13pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT

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