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Response surface evaluation of microwave-assisted extraction conditions for Lycium barbarum bioactive compounds

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dc.contributor.authorMendes, Marta
dc.contributor.authorCarvalho, Ana P.
dc.contributor.authorMagalhães, Júlia M. C. S.
dc.contributor.authorMoreira, Manuela
dc.contributor.authorGuido, Luís
dc.contributor.authorGomes, Ana M.
dc.contributor.authorDelerue-Matos, Cristina
dc.date.accessioned2017-01-11T12:15:30Z
dc.date.embargo2115-11
dc.date.issued2016
dc.description.abstractThe effects of microwave-assisted extraction (MAE) on the qualitative and quantitative composition of extracted bioactive phytochemicals are strongly dependent on specific operational conditions. The impact of temperature, extraction time, and solvent dielectric properties on the MAE of antioxidant compounds from goji berry is hereby reported and discussed. Results were evaluated in terms of antioxidant capacity (ascertained by ABTS and ORAC assays), complemented with quantification of total phenolics content (TPC), and characterization of extracts through HPLC. Furthermore, the effect of storage temperature was also studied. Results revealed that temperature and solvent properties exert a significant effect on TPC and ORAC assays, whereas irradiation time plays a key role in the preparation of extracts to be evaluated through ABTS. The effect of solvent properties is tentatively explained considering the dielectric properties of methanol and water, whereas the observed effect of temperature could be explained by its influence on the solubility of phenolic compounds.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ifset.2015.12.025pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/9207
dc.language.isoengpt_PT
dc.publisherElsevierpt_PT
dc.relation.ispartofseriesInnovative Food Science & Emerging Technologies;Vol. 33
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1466856415002817pt_PT
dc.subjectAntioxidant capacitypt_PT
dc.subjectGoji berrypt_PT
dc.subjectMAEpt_PT
dc.subjectResponse surface methodologypt_PT
dc.subjectSolvent dielectric propertiespt_PT
dc.subjectTemperaturept_PT
dc.titleResponse surface evaluation of microwave-assisted extraction conditions for Lycium barbarum bioactive compoundspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage326pt_PT
oaire.citation.startPage319pt_PT
oaire.citation.titleInnovative Food Science & Emerging Technologiespt_PT
oaire.citation.volume33pt_PT
person.familyNameDelerue-Matos
person.givenNameCristina
person.identifier.ciencia-id9A1A-43FB-5C27
person.identifier.orcid0000-0002-3924-776X
person.identifier.ridD-4990-2013
person.identifier.scopus-author-id6603741848
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication09f6a7bd-2f15-42b0-adc5-04bd22210519
relation.isAuthorOfPublication.latestForDiscovery09f6a7bd-2f15-42b0-adc5-04bd22210519

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