In contrast to this study, an antioxidant activity of 52.92 ± 0.84 mg TE/g d.m., measured as DPPH radical scavenging activity of methanolic extract of fresh Stevia leaves, was reported [12]. This antioxidant activity increased to 126 and 64.9 mg TE/g d.m. after drying for 3 min at 180 °C and 100 °C, respectively, which could mean that any synergistic effect that could be developed is stronger at very high drying temperatures than at temperatures below 80 °C. Therefore, drying was found to have a positive effect on the antioxidant activity of Stevia leaves, and dried Stevia leaves could be considered an important source of bioactive components with high antioxidant activity.