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

2023Journal article Open access
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dc.contributor.authorLopes, Ana I.
dc.contributor.authorMelo, Adma N.F.
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.accessioned2022-08-11T09:56:43Z
dc.date.available2022-08-11T09:56:43Z
dc.date.issued2023
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 (& mu;M)/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.sponsorshipThis work was financially supported by project BIOma—Soluções integradas de BIOeconomia para a Mobilização da cadeia Agroalimentar (POCI-01-0247-FEDER-046112), co-financed by Fundo Europeu de Desenvolvimento Regional (FEDER) through Programa Operacional Competitividade de Internacionalização (POCI). This research was also funded by National Funds from FCT—Fundação para a Ciência e a Tecnologia through projects UIDB/50016/2020 (CBQF), UIDB/00690/2020, UIDP/00690/2020 (CIMO), and LA/P/0007/2020 (SusTEC).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLopes, Ana I.; Melo, Adma N.F.; Caleja, Cristina; Pereira, Eliana; Finimundy, Tiane C.; Afonso, Tiago B.; Silva, Sara; Ivanov, Marija; Soković, Marina; Tavaria, Freni K.; Barros, Lillian; Pintado, Manuela (2023). Evaluation of antimicrobial and antioxidant activities of alginate edible coatings incorporated with plant extracts. Coatings. eISSN 2079-6412. 13:9, p. 1-24pt_PT
dc.identifier.doi10.3390/coatings13091487
dc.identifier.eissn2079-6412
dc.identifier.urihttp://hdl.handle.net/10198/25823
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectEdible coatingspt_PT
dc.subjectEdible filmspt_PT
dc.subjectPlant extractspt_PT
dc.subjectAntimicrobial activity
dc.subjectAntioxidant activity
dc.titleEvaluation of antimicrobial and antioxidant activities of alginate edible coatings incorporated with plant extractspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleCoatingspt_PT
person.familyNameCaleja
person.familyNamePereira
person.familyNameFinimundy
person.familyNameBarros
person.givenNameCristina
person.givenNameEliana
person.givenNameTiane C.
person.givenNameLillian
person.identifier469085
person.identifier.ciencia-idE218-8DD3-4959
person.identifier.ciencia-idBE17-462D-9A75
person.identifier.ciencia-id2F18-67B1-776A
person.identifier.ciencia-id9616-35CB-D001
person.identifier.orcid0000-0002-5769-8484
person.identifier.orcid0000-0003-2854-6745
person.identifier.orcid0000-0003-3516-0795
person.identifier.orcid0000-0002-9050-5189
person.identifier.ridQ-8017-2018
person.identifier.ridJ-3600-2013
person.identifier.scopus-author-id36514202500
person.identifier.scopus-author-id55938912300
person.identifier.scopus-author-id35236343600
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication5ef2706d-073c-4c23-9e45-498ac244118c
relation.isAuthorOfPublicationdda60cdc-0a2a-4c10-863e-eaef1e6f1fb9
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relation.isAuthorOfPublication.latestForDiscovery5ef2706d-073c-4c23-9e45-498ac244118c

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