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. 2020 Sep 6;9(9):833. doi: 10.3390/antiox9090833

Figure 3.

Figure 3

DPPH scavenging activity of ascorbic acid and astaxanthin. The antioxidative capacities of ascorbic acid and astaxanthin were determined by their capabilities to scavenge DPPH. Ascorbic acid (0.025–1.6 mM) was reacted with DPPH (A), and astaxanthin (75–105 μM) was reacted with DPPH (B). The compounds were diluted in DMSO. Both compounds scavenged DPPH in dose-dependent way in 30 min of reaction time. Asterisks indicate a significant increment in DPPH scavenging activity compared with controls (*** p < 0.001). DPPH, 2,2-diphenyl-1-picrylhydrazyl; DMSO, dimethyl sulfoxide.