Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior de Saúde >
Departamento de Tecnologias de Diagnóstico Terapêutica >
DTDT - Posters em Encontros Científicos Nacionais >

Please use this identifier to cite or link to this item:

Título: Antioxidant activities of plants enriched in rosmarinic acid
Autor: Pereira, Olívia R.
Perez, María J.
Macias, Rócio I.R.
Domingues, M.R.M.
Marín, Jose J.G.
Cardoso, Susana M.
Palavras-chave: Lavandula dentata
Mentha aquatica
Phenolic compounds
Antioxidant activity
HepG2 cells
Issue Date: 2012
Editora: Instituto Politécnico de Bragança
Citação: Pereira, Olívia R.; Perez, Maria J.; Macias, Rocio I. R.; Domingues, Maria R. M.; Marín, Jose J. G.; Cardoso, Susana M. (2012) - Antioxidant activities of plants enriched in rosmarinic acid. In 11º Encontro de Quimica dos Alimentos. Bragança
Resumo: The present study aims to evaluate the in vitro antioxidant potential of Lavandula dentata and Mentha aquatica plant extracts. For that, ethanolic extracts of the two plants were prepared and their phenolic composition was determined through combined methods of HPLC-DAD and ESI-MS. Moreover, the antioxidant activity of the plant extracts was estimated by: i) evaluation of DPPH scavenging potential and ii) monitoring the protective effects against the generation of reactive oxygen species (ROS) induced by potassium dichromate in human hepatoblastoma HepG2 cells. M. aquatica ethanolic extract was much enriched in phenolic compounds, in comparison with that of L. dentata. Both extracts contained rosmarinic acid in similar concentrations but M. aquatica also contained significant amounts of other phenolics, including rutinoside derivatives of eriodictyol and luteolin. The plant extracts showed high radical scavenging activity against DPPH radical and significantly diminished intracellular ROS production under oxidative stress conditions. The latter protection was mostly evidenced in the L. dentata extract and was also observed for the rosmarinic acid used as reference. Attending that rosmarinic acid is a major phenolic component of L. dentata and M. aquatica ethanolic extracts, the present results suggest that this phenolic compound can be involved in the antioxidant properties of both plants.
Arbitragem científica: yes
Versão do Editor:
Appears in Collections:DTDT - Posters em Encontros Científicos Nacionais

Files in This Item:

File Description SizeFormat
EQA2012_Mentha.pdf355,73 kBAdobe PDFView/Open
Restrict Access. You can request a copy!

Please give feedback about this item
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


© Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
Promotores do RCAAP   Financiadores do RCAAP

Fundação para a Ciência e a Tecnologia Universidade do Minho   Governo Português Ministério da Educação e Ciência PO Sociedade do Conhecimento (POSC) Portal oficial da União Europeia