In the present work, cyclic voltammetry and differential pulse
voltammetry were used to evaluate Agaricus sp. mushrooms anti-
oxidant activity. Moreover, the lipid peroxidation inhibition capac-
ity of the edible mushrooms was accessed by biochemical assays
used as models for the lipid peroxidation damage in biomem-
branes, namely inhibition of b-carotene bleaching in the presence
of linoleic acid radicals, inhibition of erythrocytes hemolysis med-
iated by peroxyl radicals, and inhibition of thiobarbituric acid reac-
tive substances (TBARS) formation in brain cells. Their antioxidant
properties were also evaluated through the reducing power deter-
mination and radical scavenging activity of 2,2-diphenyl-1-pic-
rylhydrazyl (DPPH) radicals. Bioactive compounds such as
phenols, flavonoids, ascorbic acid, b-carotene and lycopene were
also determined.