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Antioxidant activity of alginate edible films containing plant extracts

2022-10-23Conference object Open access
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dc.contributor.authorLopes, Ana Isabel
dc.contributor.authorSilva, Sara
dc.contributor.authorBarros, Lillian
dc.contributor.authorCaleja, Cristina
dc.contributor.authorPereira, Eliana
dc.contributor.authorTavaria, Freni
dc.contributor.authorPintado, Manuela
dc.date.accessioned2023-03-01T14:20:09Z
dc.date.available2023-03-01T14:20:09Z
dc.date.issued2022-10-23
dc.description.abstractNowadays, food packaging has been the target of increasing attention. Traditional food packaging is usually made of plastic and accounts for 36.9% of the plastics’ demand, being considered the largest market for plastic industry. Additionally, plastics are mostly produced with polymers from non-renewable sources and so, they contribute to environmental pollution. A way to circumvent this problem is the development of edible films. Edible films can act as complements to traditional plastics because their functional properties are able to extend food’s shelf-life1. Plant extracts are obtained by plants and possess antioxidant activity because of their high concentrations of phenolic compounds. They can be effective at low concentrations, are cost-effective and easy to apply, presenting low toxicity levels and high stability during processing and may not affect the sensory characteristics of food products2. The addition of plant extracts to edible films confers them the ability to act as food preservatives because they present antimicrobial activity against a broad spectrum of food poisoning microorganisms and antioxidant properties that helps to avoid the deterioration of fats and other food constituents 3. So, the main objective of this work was to evaluate the antioxidant activity of alginate edible films containing extracts of licorice (Glycyrrhiza glabra L.), eucalyptus (Eucalyptus globulus Labill.) and sage (Salvia officinalis L.). The 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) and 2,2-difenil-1-picrilhidrazil (DPPH) scavenging tests were performed on the films and the results show that the films incorporated with plant extracts present antioxidant activity when compared to the control (alginate film without plant extract). The film incorporated with sage extract was the one that presented the best antioxidant activity by both ABTS (4024,169 Trolox equivalents (M)/mg film) and DPPH (3954,813 Trolox equivalents (M)/mg film), followed by the film with eucalyptus extract (ABTS: 3706,291 Trolox equivalents (M)/mg film; DPPH: 3706,291 Trolox equivalents (M)/mg film). On the other hand, the film incorporated with licorice extract (ABTS: 942,5195 Trolox equivalents (M)/mg film; DPPH: 1040,669 Trolox equivalents (M)/mg film) was the one with least antioxidant activity.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.14/40397
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.titleAntioxidant activity of alginate edible films containing plant extractspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlacePortugalpt_PT
oaire.citation.titleXVI Encontro de Química dos Alimentos
person.familyNameRibeiro Lopes
person.familyNameSilva
person.familyNameBarros
person.familyNameKekhasharú Tavaria
person.familyNamePintado
person.givenNameAna Isabel
person.givenNameSara
person.givenNameLillian
person.givenNameFreni
person.givenNameMaria Manuela
person.identifier3115322
person.identifier1888852
person.identifier469085
person.identifier456608
person.identifier.ciencia-idDE18-E1D2-85A3
person.identifier.ciencia-id8E18-0AFF-BF6D
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id1B15-5DAD-7B27
person.identifier.ciencia-id2F13-AAE0-3405
person.identifier.orcid0000-0002-4449-5573
person.identifier.orcid0000-0001-8268-2137
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0002-6273-6668
person.identifier.orcid0000-0002-0760-3184
person.identifier.ridJ-3600-2013
person.identifier.ridF-5696-2013
person.identifier.scopus-author-id57218404880
person.identifier.scopus-author-id55158300800
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id6602645613
person.identifier.scopus-author-id7004483898
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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