*2.4.4 Anti-inflammatory activity*

Most of EOs have been firstly identified and used for the treatment of inflammatory and oxidative diseases. *Cymbopogon citratus* (Lemongrass) is a popular herb used as analgesic and anti-inflammatory agent. It has been reported that its EO suppresses COX-2 expression promoter activity; citral was identified as the major component responsible for suppressing COX-2 expression and for activating PPARα and γ [113].
