Figure 5: The effects of hesperidin, hesperetin and naringenin on NADH-oxidase (a) and succinate-oxidase (b) activities. The values are the means ± standard errors of the results obtained in six to seven independent mitochondrial preparations, depending on the experimental series. Asterisks indicate a statistically significant difference compared to the control condition, as revealed by variance analysis with post hoc Newman-Keuls testing (* ).