Figures & data
Figure 1. The experimental design of the measurements of the antioxidant activity in vitro, using DPPH (1,1-diphenyl-2-picrylhydrazyl).
![Figure 1. The experimental design of the measurements of the antioxidant activity in vitro, using DPPH (1,1-diphenyl-2-picrylhydrazyl).](/cms/asset/7eed21d2-1e04-408c-abd9-76fe2af19dec/iphb_a_630673_f0001_b.gif)
Table 1. The CE50 of the antioxidant activity (expressed in µg/mL) and the tannin concentration (expressed as the percentage of Spondias tuberosa Arruda bark) collected in different landscape units of the Caatinga, Northeast Brazil.