Fig 1. Determination of antioxidant activity of the propolis extracts from different regions of Brazil by the ABTS method, using four different concentrations (100, 500and 750 μm.mL^-1), expressed as a percentage of antioxidant activity. Fig 1A –Extracts obtained by ethanolic extraction; Fig 1B –Extracts obtained by Supercritical extraction; Fig 1C –Comparison between red propolis extracts; Fig 1D—Comparison between green propolis extracts; Fig 1E—Comparison between brown propolis extracts.

Values showing different letter on the same concentration for different propolis extracts show significant difference (p>0.05) through the Tukey test at 95% confidence level. Et—Extracts obtained by ethanolic extraction. SC—Extracts obtained by Supercritical extraction. Average of analysis obtained in triplicate (n = 3).