Figure 4.

Change in antioxidant activity in the skins of plum cultivars ‘Qiangcuili’ and ‘Cuihongli’ during development. (A) DPPH radical scavenging capacity; (B) FRAP ferric reducing antioxidant capacity. Different letters (a–f) indicate significant differences at p < 0.05 by Duncan’s test. Each point on the graph shows the mean and standard error, n = 3.