Fig. 9.
Correlation between antioxidant activities and phenolic compound of the different varieties of citrus peels. (A) DPPH radical scavenging activity; (B) ABTS radical scavenging activity; (C) Ferric reducing antioxidant power; and (D) Correlation heat map. The error bars indicate the standard deviation. Statistical analysis was performed using analysis of variance plus post-hoc Ducan's test, and * (P < 0.05) indicates a significant difference from DHP.
