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Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions

2016Journal article Open access
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dc.contributor.authorBarroso, Marisa
dc.contributor.authorBarros, Lillian
dc.contributor.authorRodrigues, M.A.
dc.contributor.authorSousa, Maria João
dc.contributor.authorSantos-Buelga, Celestino
dc.contributor.authorFerreira, Isabel C.F.R.
dc.date.accessioned2016-11-30T11:02:46Z
dc.date.available2016-11-30T11:02:46Z
dc.date.issued2016
dc.description.abstractStudies with well-established cultivation conditions are of utmost importance in order to standardize the plants production and, therefore, its chemical composition. However, the conservation conditions may influence some of the bioactive compounds present in those plants. Stevia rebaudiana Bertoni samples cultivated in the north-eastern of Portugal, were exposed to different conservation conditions (oven-dried at 30 °C, for six days, or kept fresh by freezing (-20 °C) in the same period), and then studied for their antioxidant potential (including antioxidant compounds such as reducing sugars, tocopherols and phenolic compounds, free radical scavenging activity (DPPH) and reducing power (RP)). Oven-dried samples gave the highest antioxidant activity (DPPH EC50 = 22.87 µg/mL and RP EC50 = 28.79 µg/mL) and the highest total phenolic compounds concentration. The most abundant phenolic compounds in both samples were two caffeic acid derivatives, 5-O-caffeoylquinic acid (chlorogenic acid) and 3,5-O-dicaffeoylquinic acid. Otherwise, the highest values of total tocopherols and total sugars were registered in frozen fresh samples. This study gives clues to choose the most appropriate methodology to preserve primary or secondary metabolites of S. rebaudiana, involved in its antioxidant activity.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programe PT2020 for financial support to CIMO (UID/AGR/00690/2013), LSRE (Project UID/EQU/50020/2013) and L. Barros (SFRH/BPD/107855/2015) grant.pt_PT
dc.identifier.citationBarroso, Marisa; Barros, Lillian; Rodrigues, M.A.; Sousa, Maria João; Santos-Buelga, Celestino; Ferreira, Isabel C.F.R. (2016). Stevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditions. Industrial Crops and Products. ISSN 0926-6690. 90, p. 49-55pt_PT
dc.identifier.doi10.1016/j.indcrop.2016.06.013pt_PT
dc.identifier.issn0926-6690
dc.identifier.urihttp://hdl.handle.net/10198/13551
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationProviding industry and consumers with new alternative sources of natural additives from plant origin in the classes of preservatives and colouring agents: extraction, purification, stabilization and product development
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSteviapt_PT
dc.subjectStorage conditionspt_PT
dc.subjectTocopherolspt_PT
dc.subjectSugarspt_PT
dc.subjectPhenolic compoundspt_PT
dc.subjectAntioxidant activitypt_PT
dc.titleStevia rebaudiana Bertoni cultivated in Portugal: a prospective study of its antioxidant potential in different conservation conditionspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleProviding industry and consumers with new alternative sources of natural additives from plant origin in the classes of preservatives and colouring agents: extraction, purification, stabilization and product development
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F00690%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEQU%2F50020%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBPD%2F107855%2F2015/PT
oaire.citation.endPage55pt_PT
oaire.citation.startPage49pt_PT
oaire.citation.titleIndustrial Crops and Productspt_PT
oaire.citation.volume90pt_PT
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameBarros
person.familyNameRodrigues
person.familyNameSousa
person.familyNameFerreira
person.givenNameLillian
person.givenNameManuel Ângelo
person.givenNameMaria João
person.givenNameIsabel C.F.R.
person.identifier469085
person.identifier144781
person.identifier.ciencia-id9616-35CB-D001
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.ciencia-idD91E-3571-3979
person.identifier.ciencia-id9418-CF95-9919
person.identifier.orcid0000-0002-9050-5189
person.identifier.orcid0000-0002-5367-1129
person.identifier.orcid0000-0002-9946-4926
person.identifier.orcid0000-0003-4910-4882
person.identifier.ridJ-3600-2013
person.identifier.ridO-1721-2016
person.identifier.ridE-8500-2013
person.identifier.scopus-author-id35236343600
person.identifier.scopus-author-id35270106800
person.identifier.scopus-author-id55230282700
person.identifier.scopus-author-id36868826600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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