Figure 4.

Antioxidant activity throughout the 45 min ABTS assay period for wound-healing potato extracts from Atlantic (red), Chipeta (green), Norkotah Russet (blue), and Yukon Gold (gold) cultivars, showing activities at day-3 post wounding for nonpolar (A) and polar (B) extracts; day-7 postwounding for nonpolar (C) and polar (D) extracts revealing diminished radical scavenging for nonpolar extracts (~50-fold at the 45 min assay time illustrated herein, ~100-fold at the 0 min assay time based on our prior report¹²). Scavenging activities for the nonpolar extracts were examined herein; polar extracts have been reported previously.¹² The data represent the mean ± standard error of the mean of six biological replicates for each cultivar. The highest significant scavenging activity (P < 0.05) at each time interval, calculated by means of Tukey pairwise comparisons, is denoted by an asterisk (*).²¹