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A novel application of microwave-assisted extraction of polyphenols from brewer’s spent grain with HPLC-DAD-MS analysis

2012Journal article Open access
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dc.contributor.authorMoreira, Manuela M.
dc.contributor.authorMorais, Simone
dc.contributor.authorBarros, Aquiles A.
dc.contributor.authorDelerue-Matos, Cristina
dc.contributor.authorGuido, Luís F.
dc.date.accessioned2013-09-27T14:15:58Z
dc.date.available2013-09-27T14:15:58Z
dc.date.issued2012
dc.description.abstractThis paper reports a novel application of microwave-assisted extraction (MAE) of polyphenols from brewer’s spent grains (BSG). A 24 orthogonal composite design was used to obtain the optimal conditions of MAE. The influence of the MAE operational parameters (extraction time, temperature, solvent volume and stirring speed) on the extraction yield of ferulic acid was investigated through response surface methodology. The results showed that the optimal conditions were 15 min extraction time, 100 °C extraction temperature, 20 mL of solvent, and maximum stirring speed. Under these conditions, the yield of ferulic acid was 1.31±0.04% (w/w), which was fivefold higher than that obtained with conventional solid–liquid extraction techniques. The developed new extraction method considerably reduces extraction time, energy and solvent consumption, while generating fewer wastes. HPLC-DADMS analysis indicated that other hydroxycinnamic acids and several ferulic acid dehydrodimers, as well as one dehydrotrimer were also present, confirming that BSG is a valuable source of antioxidant compounds.por
dc.identifier.doi10.1007/s00216-011-5703-ypt_PT
dc.identifier.issn1618-2642
dc.identifier.urihttp://hdl.handle.net/10400.22/2033
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherSpringerpor
dc.relation.ispartofseriesAnalytical and Bioanalytical Chemistry; Vol. 403, Issue 4
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs00216-011-5703-ypor
dc.subjectBrewer’s spent grainpor
dc.subjectPolyphenolspor
dc.subjectFerulic acidpor
dc.subjectMicrowave-assisted extractionpor
dc.subjectHPLC-DAD-MS analysispor
dc.titleA novel application of microwave-assisted extraction of polyphenols from brewer’s spent grain with HPLC-DAD-MS analysispor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1029por
oaire.citation.issueIssue 4
oaire.citation.startPage1019por
oaire.citation.titleAnalytical and Bioanalytical Chemistry
oaire.citation.volumeVol. 403por
person.familyNameMorais
person.familyNameDelerue-Matos
person.givenNameSimone
person.givenNameCristina
person.identifier1598822
person.identifier.ciencia-idB111-BBFB-F200
person.identifier.ciencia-id9A1A-43FB-5C27
person.identifier.orcid0000-0001-6433-5801
person.identifier.orcid0000-0002-3924-776X
person.identifier.ridD-4990-2013
person.identifier.scopus-author-id7007053747
person.identifier.scopus-author-id6603741848
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication7a9c7d63-a6c7-4159-b12d-b049b8c5c8f9
relation.isAuthorOfPublication09f6a7bd-2f15-42b0-adc5-04bd22210519
relation.isAuthorOfPublication.latestForDiscovery09f6a7bd-2f15-42b0-adc5-04bd22210519

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