Figure 4.

The antioxidant activity of acteoside (A) and diplacone (D) at a nontoxic concentration of 5 µM in a GOSP assay in HepG2 cells. Quercetin at a concentration of 5 µM was used as a positive control (PC). DMSO, the solvent used for both the test compounds and quercetin, was added as the negative control (NC). Normoglycemic control was achieved using a low glucose medium (LG). All other samples were incubated in a high-glucose medium. The results are expressed as the mean ± SEM for two independent experiments measured in triplicate and were statistically compared to NC (*** p < 0.001).