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Application of response surface methodology for obtaining lettuce (Lactuca sativa L.) by-products extracts with high antioxidative properties

2013Journal article Open access
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dc.contributor.authorGomes, Teresa
dc.contributor.authorDelgado, Teresa
dc.contributor.authorFerreira, Anabela
dc.contributor.authorPereira, J.A.
dc.contributor.authorBaptista, Paula
dc.contributor.authorCasal, Susana
dc.contributor.authorRamalhosa, Elsa
dc.date.accessioned2013-08-19T11:13:57Z
dc.date.available2013-08-19T11:13:57Z
dc.date.issued2013
dc.description.abstractThe main objective of the present work was to optimize the extraction conditions for simultaneous maximization of total reducing (TRC) and antioxidant (AC) capacities for lettuce (Lactuca sativa L.) by-products extracts, using response surface methodology. For this, a design of experiments (DOE) with different combinations of solvents (water, methanol and acetone) extraction temperatures (30–60 ◦C) and time (10–60 min) on the TRC and AC was applied. Higher and consistent fittings using second order polynomial models of the experimental data with regard to TRC (R2 = 0.529, p lack of fit > 0.05) and AC (R2 = 0.900, p lack of fit > 0.05) were obtained with methanol. The optimum extraction conditions based on combination responses for TRC and AC were: 30% methanol (v/v), 60 ◦C and 60 min. A close agreement between experimental and predicted values was found when applying these conditions. Furthermore, when aqueous extracts were prepared (e.g. 45 ◦ C, 10 min), these presented similar TRC and AC properties to those obtained by the above optimum extraction conditions, having the advantage of applying mild extraction conditions and avoiding the use of organic solvents in their preparation.por
dc.description.sponsorshipFCT (Fundação para a Ciência e Tecnologia) e o FEDER através do programa COMPETE através dos projetos projects FCOMP- 01-0124-FEDER-008703 (FCT/PTDC/AGR-AAM/102447/2008), PEst-C/EQB/LA0006/2011, e PEst-OE/AGR/UI0690/2011por
dc.identifier.citationGomes, Teresa; Delgado, Teresa; Ferreira, Anabela; Pereira, José Alberto; Baptista, Paula; Casal, Susana; Ramalhosa, Elsa (2013). Application of response surface methodology for obtaining lettuce (Lactuca sativa L.) by-products extracts with high antioxidative properties. Industrial Crops and Products. ISSN 0926-6690. 44, p. 622–629por
dc.identifier.doi10.1016/j.foodres.2012.09.039
dc.identifier.issn0926-6690
dc.identifier.urihttp://hdl.handle.net/10198/8591
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectLettucepor
dc.subjectResponse surface methodologypor
dc.subjectExtraction optimizationpor
dc.subjectTotal reducing capacitypor
dc.subjectAntioxidant capacitypor
dc.titleApplication of response surface methodology for obtaining lettuce (Lactuca sativa L.) by-products extracts with high antioxidative propertiespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage629por
oaire.citation.startPage622por
oaire.citation.titleIndustrial Crops and Productspor
oaire.citation.volume44por
person.familyNamePereira
person.familyNameBaptista
person.familyNameRamalhosa
person.givenNameJosé Alberto
person.givenNamePaula
person.givenNameElsa
person.identifier.ciencia-id611F-80B2-A7C1
person.identifier.ciencia-id7D11-FE1E-CD0F
person.identifier.ciencia-id1A1D-FC05-A05D
person.identifier.orcid0000-0002-2260-0600
person.identifier.orcid0000-0001-6331-3731
person.identifier.orcid0000-0003-2503-9705
person.identifier.ridL-6798-2014
person.identifier.scopus-author-id57204366348
person.identifier.scopus-author-id14051688000
person.identifier.scopus-author-id6602978189
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication7932162e-a2da-4913-b00d-17babbe51857
relation.isAuthorOfPublication3f35226a-b17a-4f7d-8da1-3297105cbfe9
relation.isAuthorOfPublicationd74be6c0-1703-4f77-bd81-e289ec981ee3
relation.isAuthorOfPublication.latestForDiscovery3f35226a-b17a-4f7d-8da1-3297105cbfe9

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