In this study,DPPH radical scavenging activities and reducing powers of flavonoids from 9 different varieties of citrus peel were compared.Meanwhile,the effect of macroporous resin purification on these antioxidant activities was studied.The results indicated that both DPPH radical scavenging activities and reducing powers of flavonoids differed significantly among 9 varieties of citrus peel(P < 0.05).Both crude and purified flavonoids from Nanfeng citrus peel revealed the strongest DPPH radical scavenging ...