Repository logo
 
Publication

Influence of strawberry tree (Arbutus unedo L.) fruit ripening stage on chemical composition and antioxidant activity

2011Journal article Restricted access
Simple item page
dc.contributor.authorOliveira, Ivo
dc.contributor.authorBaptista, Paula
dc.contributor.authorMalheiro, Ricardo
dc.contributor.authorCasal, Susana
dc.contributor.authorBento, Albino
dc.contributor.authorPereira, J.A.
dc.date.accessioned2014-09-22T08:52:51Z
dc.date.available2014-09-22T08:52:51Z
dc.date.issued2011
dc.description.abstractArbutus unedo is a widespread shrub with economic importance, derived from the use of its berries in the production of alcoholic beverages and in folk medicine. This work intends to evaluate for the first time the effect of fruit ripening stage on antioxidant activity, total phenolic content, fatty acid profile and tocopherol composition. Ripe fruits shown higher extraction yield (45.04±2.23%) when compared to other fruit ripening stages. By contrast, total phenol contents were higher in the unripe and intermediate stage of ripeness (108 and 111 mg GAES/g dry fruit, respectively, against 60 mg/g dry fruit when ripe). Ripe and intermediate fruits shown the lower EC50 values on the DPPH radicals (0.25±0.02 mg/mL) and reducing power assay (1.09± 0.05 mg/mL), respectively. A significant correlation was established between antioxidant activity and fruits ripening stage. Fatty acid profiles were very similar between the ripening stages, being alfa-linolenic, linoleic and oleic, the three major ones. Polyunsaturated fatty acids (PUFA) represent as much as 60% of the total fatty acids, with a highly favorable omega 3/omega 6 ratio. From the analysis of the vitamin E vitamers, the most important was γ-tocotrienol, with a clear reduction in the total free vitamin E content with ripening. These results highlight that the fruits of intermediate ripeness can be regarded important sources of biologically active compounds with a fatty acid profile rich in omega-3 PUFA, properly supplemented with high vitamin E amounts.por
dc.identifier.citationOliveira, Ivo; Baptista, Paula; Malheiro, R.; Casal, Susana; Bento, Albino; Pereira, J.A. (2011). Influence of strawberry tree (Arbutus unedo L.) fruit ripening stage on chemical composition and antioxidant activity. Food Research International. ISSN 0963-9969. 44:5, p. 1401-1407por
dc.identifier.doi10.1016/j.foodres.2011.02.009
dc.identifier.issn0963-9969
dc.identifier.urihttp://hdl.handle.net/10198/10513
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectArbutus unedo L. fruitspor
dc.subjectRipening stagepor
dc.subjectFatty acidspor
dc.subjectTocopherolspor
dc.subjectTotal phenolspor
dc.subjectAntioxidant activitypor
dc.titleInfluence of strawberry tree (Arbutus unedo L.) fruit ripening stage on chemical composition and antioxidant activitypor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1407por
oaire.citation.issue5por
oaire.citation.startPage1401por
oaire.citation.titleFood Research Internationalpor
oaire.citation.volume44por
person.familyNameBaptista
person.familyNameMalheiro
person.familyNameBento
person.familyNamePereira
person.givenNamePaula
person.givenNameRicardo
person.givenNameAlbino António
person.givenNameJose Alberto
person.identifier.ciencia-id7D11-FE1E-CD0F
person.identifier.ciencia-idD516-325A-9AD7
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.orcid0000-0001-6331-3731
person.identifier.orcid0000-0002-7342-0511
person.identifier.orcid0000-0001-5215-785X
person.identifier.orcid0000-0002-2260-0600
person.identifier.ridN-9706-2016
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id14051688000
person.identifier.scopus-author-id25650218300
person.identifier.scopus-author-id35247694000
person.identifier.scopus-author-id57204366348
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication3f35226a-b17a-4f7d-8da1-3297105cbfe9
relation.isAuthorOfPublication0fa7974d-abd3-444b-9a7e-16d16530a0f7
relation.isAuthorOfPublication233115be-9d46-49d0-8b7d-2d64406d64a0
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication.latestForDiscovery7932162e-a2da-4913-b00d-17babbe51857

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
1.pdf
Size:
701.92 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CIMO - Artigos em Revistas Indexados à WoS/Scopus