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dc.contributor.CRUESPUNIVERSIDADE DE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authoremailfacabral@unicamp.brpt_BR
dc.typeArtigopt_BR
dc.titleInfluence Of Ethanol, Water, And Their Mixtures As Co-solvents Of The Supercritical Carbon Dioxide In The Extraction Of Phenolics From Purple Corn Cob (zea Mays L.)en
dc.contributor.authorMonroypt_BR
dc.contributor.authorYaneth M.; Rodriguespt_BR
dc.contributor.authorRodney A. F.; Sartorattopt_BR
dc.contributor.authorAdilson; Cabralpt_BR
dc.contributor.authorFernando A.pt_BR
unicamp.authorCabral, Fernando A.] Univ Campinas UNICAMP, Dept Food Engn, BR-13083862 Campinas, SP, Brazilpt_BR
unicamp.authorSartoratto, Adilson] Univ Campinas UNICAMP, Chem Biol & Agr Pluridisciplincuy Res Ctr CPQBA, BR-13083970 Campinas, SP, Brazilpt_BR
unicamp.author.external[Monroy, Yaneth M.pt_BR
unicamp.author.external[Rodrigues, Rodney A. F.pt_BR
dc.subjectPhenolic Totalsen
dc.subjectFlavonoids Totalsen
dc.subjectAnthocyanins Monomeric Totalsen
dc.subjectColoren
dc.subjectAntioxidant Activityen
dc.subjectSupercritical Extractionen
dc.description.abstractSupercritical carbon dioxide (scCO(2)), ethanol (EtOH), and water are considered GRAS (Generally Recognized as Safe) solvents. They exhibit considerable advantages in the extraction of phenolic compounds with a wide range of polarities, such as the anthocyanins found in purple corn (Zea mays L.). To evaluate the effect of ethanol and water as co-solvents in the scCO(2) extraction of phenolic compounds of purple corn cobs, extracts were obtained at 400 bar and 50 degrees C using EtOH (CE), water (CW), and mixtures of EtOH/water 50% (CE50), and EtOH/water 70% (CE70) as co-solvents of scCO(2). The overall yield (X-0), the extraction yield of total monomeric anthocyanins (TMA), total phenolics (TP), total flavonoids (TF) were determined in the extracts, as well as the antioxidant activity (AA) expressed as EC50/DPPH, color, and presence of specific anthocyanins by HPLC. The lowest extraction yield (4.15%) was obtained when ethanol was used as co-solvent (CE), and the highest yield (24.4%) was observed when using a mixture of EtOH/water (70%, CE70) as co-solvent. The presence of EtOH and water was essential to obtain concentrated phenolic extracts, with values around 66 mg cyanidin-3-glycoside equivalent per gram of dried extract, 290 mg gallic acid equivalent per gram, and 117 mg catechin equivalent per gram, and antioxidant activity of CE50 =31 mu g/mL by DPPH. (C) 2016 Elsevier B.V. All rights reserved.en
dc.relation.ispartofThe Journal of Supercritical Fluidspt_BR
dc.publisherElsevier Science BVpt_BR
dc.publisherAmsterdampt_BR
dc.date.issued2016pt_BR
dc.date.monthofcirculationdezpt_BR
dc.identifier.citationThe Journal Of Supercritical Fluids. Elsevier Science Bv, v. 118, p. 11 - 18, 2016.pt_BR
dc.language.isoEnglishpt_BR
dc.description.volume118pt_BR
dc.description.firstpage11pt_BR
dc.description.lastpage18pt_BR
dc.rightsfechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0896-8446pt_BR
dc.identifier.eissn1872-8162pt_BR
dc.identifier.wosidWOS:000383827200002pt_BR
dc.identifier.doi10.1016/j.supflu.2016.07.019pt_BR
dc.identifier.urlhttp://www.sciencedirect.com/science/article/pii/S089684461630225Xpt_BR
dc.description.sponsorshipCNPqpt_BR
dc.description.sponsorshipSao Paulo Research Foundation FAPESP [2012/51317-1]pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.date.available2017-11-13T13:58:00Z-
dc.date.accessioned2017-11-13T13:58:00Z-
dc.description.provenanceMade available in DSpace on 2017-11-13T13:58:00Z (GMT). No. of bitstreams: 1 000383827200002.pdf: 2589517 bytes, checksum: 4f01af74235008b2ff5ffa640b135888 (MD5) Previous issue date: 2016en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/330166-
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