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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/7368

Título: Insights in the antioxidant synergistic effects of combined edible mushrooms: phenolic and polysaccharidic extracts of Boletus edulis and Marasmius oreades
Autor: Vieira, Vanessa
Marques, Azucena
Barros, Lillian
Barreira, João C.M.
Ferreira, Isabel C.F.R.
Palavras-chave: Edible mushrooms
Phenolics
Polysaccharides
Antioxidant activity
Synergism
Issue Date: 2012
Citação: Vieira, Vanessa; Marques, Azucena; Barros, Lillian; Barreira, João C.M.; Ferreira, Isabel C.F.R. (2012) - Insights in the antioxidant synergistic effects of combined edible mushrooms: phenolic and polysaccharidic extracts of Boletus edulis and Marasmius oréades. Journal of Food and Nutrition Research. ISSN 1336-8672. 51:2, p. 109-116
Resumo: In a previous work, we reported the presence of Marasmius oreades in mixtures with antioxidant synergistic effects, and the mixture Boletus edulis and Marasmius oreades (50% of each) as having the highest antioxidant activity, but without synergism among the phenolic extracts. Herein, phenolic and polysaccharidic extracts from both species were combined in different proportions (12.5, 25, 50, 75 and 87.5%) and compared to controls (individual samples), in order to give insight in the contribution of each species to antioxidant synergistic effects. The antioxidant activity of the individual or combined extracts obtained from both edible mushrooms was evaluated through their 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity, reducing power, -carotene bleaching inhibition and lipid peroxidation inhibition in brain homogenates using thiobarbituric acid reactive substances (TBARS) assay. Synergism was the main observed effect among the combined extracts, either phenolic or polysaccharidic. However, the effect of each B. edulis and M. oreades proportion was not the same for all antioxidant activity assays. In fact, the same mixture exhibited sometimes opposite behaviours according with the performed antioxidant activity assay.
Arbitragem científica: yes
URI: http://hdl.handle.net/10198/7368
ISSN: 1336-8672
Appears in Collections:BB - Artigos em Revistas Indexados ao ISI

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