Sample solutions (100L, 10 mg/mL) were added to 3.5mL
methanol DPPH radical solution (0.06mM) (Gouveia and Castilho,
2012b). The decrease in absorbance ( = 516 nm) was measured
during 30 min. The DPPH radical scavenging effect was expressed
as mol Trolox eq per 100 g of dried plant (mol eq Trolox/100 g
dried plant).