DPPH free radical scavenging assay
Free radical scavenging is one of the known mechanisms by which antioxidants inhibit lipid oxidation.
Scavenging effects of ethanol extracts from mushrooms on DPPH radical increased with the increased concentrations.
According to the Table 2, Brazilian mushroom showed higher radical scavenging activity which was 85.44% compared to button mushroom which was 82.39% in ethanol extracts when tested at the highest concentration (25 mg/ml).
In general, the scavenging activity of the Brazilian mushroom was higher than that of button mushroom in the concentration range tested.
The radical scavenging activity of ethanol extract of Brazilian was better than that of button mushroom probably due to higher content of phenolic compounds and dietary fibers (Abdullah et al., 2011).