Antioxidant activity of the extracts from Pycnoporus sanguineus mycelium

AUTOR(ES)

Borderes, Josiane, Costa, Alessandra, Guedes, Alessandro, Tavares, Lorena Benathar Ballod

FONTE

Brazilian Archives of Biology and Technology

DATA DE PUBLICAÇÃO

2011-12

RESUMO

The aim of this work was to study the production of compounds with antioxidant activity by Pycnoporus sanguineus when cultivated in submerged fermentation using a potato dextrose broth plus peptone medium. The study evaluated the biomass production, glucose consumption, variation of medium pH and antioxidant activity. The antioxidant potential was tested through the DPPH method and β-carotene / linoleic acid system with extracts obtained from the mycelium at different times of cultivation (5, 10, 15, 20, 25 and 30 days). Maximum kinetic values of specific growth rate (0.289 day-1), biomass productivity (0.698 g.L-1.day-1) and the yield of glucose conversion into biomass (26.24 g.g-1) were obtained during the exponential growth phase. The highest antioxidant activity was registered during the stationary phase, with a similar potential as the synthetic antioxidant BHT, in the extracts obtained at 30 days of cultivation.

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