DPPH scavenging activity was measured by the slightly
modified spectrophotometric method of Brand-Williams
et al. [10]. The absorbance of DPPH diluted in methanol
was considered as control. The decrease in absorbance
was measured at 517 nm. The antioxidant capacity to
scavenge the DPPH radical was calculated by the following
equation: Scavenging effect (%): [(1-absorbance
of sample/absorbance of control) × 100]. Results were
expressed as Mean ± SD of three experiments made by
triplicate.