Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior Agrária >
Biologia e Biotecnologia >
BB - Resumos em Proceedings Não Indexados ao ISI/Scopus >

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

Título: Phenolic compounds and antioxidant activity of two regions Portugal propolis
Autor: Moreira, Leandro
Pereira, Ermelinda
Dias, L.G.
Pires, Sância
Estevinho, Leticia M.
Palavras-chave: Propolis
Antioxidant activity
Phenolic compounds
Issue Date: 2008
Editora: Jennifer Teal, Juliet L Osborne and Robert J Paxton
Citação: Moreira, Leandro; Pereira, Ermelinda; Dias, Luís; Pires, Sância; Estevinho, Letícia (2008) - Phenolic compounds and antioxidant activity of two regions Portugal propolis. In 3rd European Conference of Apidology. Belfast
Resumo: The aim of the present work was to evaluate the total phenolic compounds, quantified and identified the phenolic and flavonoid compounds and also the antiodoxidant activity of the propolis, collected from two regions of Portugal (Trás-os-Montes and Beira-Baixa). The total phenolic content was determined by Folin-Ciocalteu method and identified by Thin Layer Chromatography (TLC) bi-dimensional. The antioxidant activity was evaluated by 1.1-diphenyl-2-picrylhydrazyl scavenging (DPPH) and reducing power assays. The results showed that Tras-os-Montes propolis (329mg/g eq. gallic acid) had a higher content in phenolic compounds of the methanolic extracts than Beira-Baixa propolis (151mg/g eq. gallic acid). The value of the antioxidant activity determined by the DPPH assay was EC50 = 6.22µg/mL and EC50 = 52.00 µg/mL for Trás-os-Montes and Beira-Baixa propolis, respectively. Similar trend was obtained by the reducing power assays (EC50 = 4µg/mL and EC50 = 39µg/mL for the same samples, respectively). Through analysis of the results we can see that the propolis sample of Trás-os-Montes was a highest antioxidant activity, probably due to the amount of total phenolic compounds. Our results suggest that the concentration of propolis of Tras-os-Montes necessary to obtain an antioxidant activity is very low, making possible the use of this propolis as a natural antioxidant.
Arbitragem científica: yes
Appears in Collections:BB - Resumos em Proceedings Não Indexados ao ISI/Scopus

Files in This Item:

File Description SizeFormat
Eurbee2008.pdf546,48 kBAdobe PDFView/Open

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