Fig. 1

Effects of SBT twig and leaf extracts (0.5–50 μg/mL; 15 min (a) and 60 min (b)) on plasma lipid peroxidation induced by H₂O₂. In these experiments, the TBARS level (marker of lipid peroxidation) in control samples (plasma treated with only H₂O₂) was 0.254 ± 0.046 nmol/mL of plasma. Data represent means ± SD of 5–10. The effect of five different concentrations of two tested extracts (0.5, 1, 5, 10 and 50 μg/mL; for 15 min) was statistically significant (*p < 0.05, **p < 0.005; ***p < 0.001) in comparison to control. The effect of five different concentrations of two tested extracts (0.5, 1, 5, 10 and 50 μg/mL; for 60 min) was not statistically significant (p > 0.05 (n.s.)) in comparison to control. The effects were not statistically significant: SBT twig extract-treated plasma vs. SBT leaf extract-treated plasma (p > 0.05 (n.s.); for all tested concentrations- 0.5 - 50 μg/mL; for 15 and 60 min). black diagram – control, white diagram – twig, grey diagram - leaf