Fig. 5From: Kinetics of DPPH• scavenging by bacterioruberin from Haloferax alexandrinus GUSF-1 (KF796625)Plot of pseudo-first-order rate constant (kobs) versus bacterioruberin concentration. All measurements were carried out in methanol medium. Data are expressed as mean ± SD of five independent experiments. The second-order constant k2 was calculated from the slope of this plotBack to article page