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Improving bioactive compounds extractability of Amorphophallus paeoniifolius (Dennst.) Nicolson

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dc.contributor.authorCosta, Anabela S. G.
dc.contributor.authorBarreira, João C. M.
dc.contributor.authorRuas, Adilson
dc.contributor.authorVinha, Ana F.
dc.contributor.authorPimentel, Filipa B.
dc.contributor.authorAlves, Rita C.
dc.contributor.authorFerreira, Isabel C. F. R.
dc.contributor.authorOliveira, M. Beatriz P. P.
dc.date.accessioned2017-01-11T12:16:38Z
dc.date.embargo2115-11
dc.date.issued2016
dc.description.abstractElephant foot yam (Amorphophallus paeoniifolius (Dennst.) Nicolson) is an underground, unbranched deciduous plant that produces a large tubercle (rhizome) with recognized health effects. In this study, the influence of solvent nature (water, water/etanol (1:1) and absolute ethanol) and processing type (fresh, lyophilized and boiled) on the antioxidant activity and bioactive compounds extractability of elephant foot yam was evaluated. Extracts were compared for their contents in total phenolics, flavonoids and tannins. Moreover, their antioxidant capacity was assessed by the ferric reducing antioxidant power (FRAP) and the 2,2-diphenyl-1-picrylhydrazyl radical (DPPHradical dot) scavenging capacity assays. Phenolics (154 mg GAE/L) and tannins (109 mg GAE/L) were maximized in lyophilized samples extracted with the hydroalcoholic solvent, which attained also the highest FRAP value (711 mg FSE/L). In turn, flavonoids reached the highest yields in lyophilized samples (95 mg ECE/L) extracted with pure ethanol, as well as the highest DPPHradical dot scavenging activity. These findings might have practical applications to define the best processing methodology regarding the enhancement of elephant foot yam, either for prompt consumption, as well as to develop food supplements or pharmaceutical related products.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.indcrop.2015.11.019pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/9208
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.ispartofseriesIndustrial Crops and Products;Vol. 79
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S092666901530515Xpt_PT
dc.subjectElephant foot yam extractspt_PT
dc.subjectBioactive compoundspt_PT
dc.subjectPhenolicspt_PT
dc.subjectAntioxidant activitypt_PT
dc.titleImproving bioactive compounds extractability of Amorphophallus paeoniifolius (Dennst.) Nicolsonpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage187pt_PT
oaire.citation.startPage180pt_PT
oaire.citation.titleIndustrial Crops and Productspt_PT
oaire.citation.volume79pt_PT
person.familyNameAlves
person.givenNameRita C.
person.identifier.orcid0000-0002-5053-513X
person.identifier.ridI-9081-2012
person.identifier.scopus-author-id7102691286
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication4b5cf5a1-8445-4d6a-ac30-5fbee0326269
relation.isAuthorOfPublication.latestForDiscovery4b5cf5a1-8445-4d6a-ac30-5fbee0326269

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