Their antioxidant and anti-inflammatory activities are largely
due to their abilities to scavenge the reactive oxygen species (ROS) and improvement of antioxidant status by attenuating the activity of NF - κB and suppressing the expression of several inflammatory cytokines and chemokines including monocyte chemotactic protein - 1 (MCP - 1), nitric oxide synthase, cyclooxygenases, lipoxygenases, cellular adhesion molecules,
tumor necrosis factor and interleukins.