“…In addition, flavonoids are the secondary metabolites of plants that cannot be synthesized by humans (Peterson and Dwyer, 1998). They have been reported to have antibacterial, antiviral, anti-allergic, antiplatelet, anti-inflammatory, antitumour and anti-oxidant activities (Hasan et al,2009;Zainol et al, 2003;Cook and Samman, 1996).…”