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Provedor de dados:  IPB - Escola Superior Agrária
País:  Portugal
Título:  Total phenols, ascorbic acid, b-carotene and lycopene in Portuguese wild edible mushrooms and their antioxidant activities
Autores:  Barros, Lillian
Ferreira, Maria João
Queirós, Bruno
Ferreira, Isabel C.F.R.
Baptista, Paula
Data:  2008-09-12
Ano:  2007
Palavras-chave:  Mushrooms
Antioxidants
Phenolics
Ascorbic acid
Beta-carotene
Lycopene
Resumo:  The antioxidant activities of three Portuguese wild edible mushroom species, Leucopaxillus giganteus, Sarcodon imbricatus, andAgaricus arvensis, were evaluated. Methanolic extracts were screened for their reducing power, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicalscavenging capacity, inhibition of erythrocytes hemolysis and antioxidant activity using the b-carotene linoleate model system. The amounts of ascorbic acid, b-carotene and lycopene found in the mushroom extracts were very low. Otherwise, the high contents of phenolic compounds might account for the good antioxidant properties found in all species. L. giganteus had the highest content of phenols and proved to be the most active, presenting lower EC50 values in all the antioxidant activity assays.
Tipo:  Article
Idioma:  Inglês
Identificador:  Food Chemistry. ISSN 0308-8146. 103:2 (2007) p. 413-419

0308-8146

http://hdl.handle.net/10198/840
Editor:  Elsevier
Direitos:  open access
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