Extracts From Pitanga (eugenia Uniflora L.) Leaves: Influence Of Extraction Process On Antioxidant Properties And Yield Of Phenolic Compounds

dc.creatorMartinez-Correa H.A.
dc.creatorMagalhaes P.M.
dc.creatorQueiroga C.L.
dc.creatorPeixoto C.A.
dc.creatorOliveira A.L.
dc.creatorCabral F.A.
dc.date2011
dc.date2015-06-30T20:40:58Z
dc.date2015-11-26T14:53:18Z
dc.date2015-06-30T20:40:58Z
dc.date2015-11-26T14:53:18Z
dc.date.accessioned2018-03-28T22:05:13Z
dc.date.available2018-03-28T22:05:13Z
dc.identifier
dc.identifierJournal Of Supercritical Fluids. , v. 55, n. 3, p. 998 - 1006, 2011.
dc.identifier8968446
dc.identifier10.1016/j.supflu.2010.09.001
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-78650234656&partnerID=40&md5=54bc1a4ca6b3b852a3e787b6e2d230cd
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/108872
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/108872
dc.identifier2-s2.0-78650234656
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1254943
dc.descriptionDifferent extraction processes were employed to extract the polyphenolic compounds from pitanga (Eugenia uniflora L.) leaves: a one-step process using water, ethanol or supercritical CO2 as solvents, and a two-step process using supercritical CO2 followed by either water or ethanol. The total polyphenolic compounds, total flavonoids and antioxidant activity were determined in all the extracts obtained. The process performance was evaluated with respect to three variables: global extraction yield, concentration and yield of both polyphenols and flavonoids in the extracts. For the one-step extraction, the results showed that the extraction yield increased with solvent polarity. For the two-step process, the results suggested that water was more efficient in extracting the phenolic compounds from E. uniflora when the matrix was previously extracted with scCO2. With respect to the antioxidant activity, the ethanolic extracts obtained from both processes, using either the DPPH radical scavenging method or the β-carotene bleaching method, presented high antioxidant activities. © 2010 Elsevier B.V. All rights reserved.
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dc.languageen
dc.publisher
dc.relationJournal of Supercritical Fluids
dc.rightsfechado
dc.sourceScopus
dc.titleExtracts From Pitanga (eugenia Uniflora L.) Leaves: Influence Of Extraction Process On Antioxidant Properties And Yield Of Phenolic Compounds
dc.typeArtículos de revistas


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