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Comparison between the phytochemical and antioxidant properties of plants used in plant infusions for medicinal purposes

2013Journal article Open access
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dc.contributor.authorFerreira da Vinha, Ana
dc.contributor.authorBarreira, Sérgio
dc.contributor.authorCastro, Ana
dc.contributor.authorMachado, Marisa
dc.date.accessioned2021-04-22T09:37:50Z
dc.date.available2021-04-22T09:37:50Z
dc.date.issued2013
dc.description.abstractIt has already been acknowledged among the medical community that plant based treatments represent an interesting contribution to modern therapeutics due to the presence in their composition of molecules with pharmacological and antioxidant action. The aim of this study was to evaluate the contents of total phenolics, flavonoids, and caffeine in six plants used traditionally by healers in Portugal and usually consumed as tea or infusion namely: Camellia sinensis, Melissa officinalis, Lippia citriodora, Cymbopogon citratus, Matricaria chamomilla, and Tilia cordata. Total phenolics ranged from 32.05 mg GAE/100g for aqueous extracts obtained from leaves of L. citriodora to 145.28 mg GAE/100g for aqueous extracts of C. sinensis. Significant variations in the flavonoid content were also found among analyzed plants and depending on the nature of the extract, with C. sinensis standing out again with the highest values (78.31 mg CE/100g) and the ethanolic extract obtained from the flowers of T. cordata exhibiting the lowest content (25.15 mg CE/100g). The concentration of caffeine was also very diverse and followed the sequence M. officinalis < T. cordata < C. citratus < M. chamomilla < L. citriodora < C. sinensis. The antioxidant activity of each plant was evaluated in vitro using a standard model system, the DPPH assay, and was found to vary according to C. citratus (90.9%) > C. sinensis (87.8%) > M. officinalis (50.7%) > M. chamomilla (45.3%) > T. cordata (32.2%) > L. citriodora (28.0%). The aqueous extracts presented lower antioxidant activity than the corresponding ethanolic ones.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVinha, A.F., Barreira, S.V.P., Castro, A., Machado, M. 2013. Comparison Between the phytochemical and antioxidant properties of plants used in plant infusions for medicinal purposes. Journal of Agricultural Science, 5(11), 11-19. (doi: 10.5539/jas.v5n11p11)pt_PT
dc.identifier.doi10.5539/jas.v5n11p11pt_PT
dc.identifier.eissn1916-9760
dc.identifier.issn1916-9752
dc.identifier.urihttp://hdl.handle.net/10284/9757
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCanadian Center of Science and Educationpt_PT
dc.relation.publisherversionhttp://www.ccsenet.orgpt_PT
dc.subjectMedicinal plantspt_PT
dc.subjectCaffeinept_PT
dc.subjectPhenolicspt_PT
dc.subjectFlavonoidspt_PT
dc.subjectAntioxidant activitypt_PT
dc.titleComparison between the phytochemical and antioxidant properties of plants used in plant infusions for medicinal purposespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage19pt_PT
oaire.citation.issue11pt_PT
oaire.citation.startPage11pt_PT
oaire.citation.titleJournal of Agricultural Sciencept_PT
oaire.citation.volume5pt_PT
person.familyNameMendes Ferreira da Vinha
person.familyNameBarreira
person.givenNameAna Cristina
person.givenNameSérgio
person.identifier.ciencia-id011A-FCBD-DC66
person.identifier.ciencia-id4514-45D3-DC11
person.identifier.orcid0000-0002-6116-9593
person.identifier.orcid0000-0001-5956-7501
person.identifier.scopus-author-id55812422900
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationb09696c0-d5ea-4218-a5e4-63a3f6288d83
relation.isAuthorOfPublicationdbe45ee6-efba-417e-92ef-53145e55db29
relation.isAuthorOfPublication.latestForDiscoveryb09696c0-d5ea-4218-a5e4-63a3f6288d83

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