Chemical Composition and Pharmacological Effects of Geopropolis Produced by Melipona quadrifasciata anthidioides

Figure 2

Antioxidant activity, as shown by scavenging of the free radicals (a) DPPH^• and (b) ABTS^•+ by the ascorbic acid and BHT controls and by the M. q. anthidioides geopropolis extract (0.1–200 μg/mL).

(a)

(b)