Composition and Antioxidant Activity of Geopropolis Collected by Melipona subnitida (Jandaíra) Bees

Table 2

Total phenolics and antioxidant activity of samples.

Extract or fraction	Total phenolic content (mgGAE/g)^a	DPPH (EC50)^a	ABTS (EC50)^a	𝛽-Carotene bleaching (% O.I.)^b
EtOH	63.9±8.6	27.0±0.4	12.2±0.1	35.7±4.0
Hexane	25.6±0.5	239.3±1.1	32.3±0.3	26.3±3.5
EtOAc	115.8±0.8	10.1±0.0	4.3±0.0	55.1±1.9
MeOH : H2O	40.0±7.8	38.5±0.5	26.2±0.3	20.7±1.6
Ascorbic acid		2.1±0.0	—
Trolox		—	3.0±0.1	81.3±0.2

Mean value ± standard deviation: 𝑛=3.
^aAntioxidant concentration required to reduce the original radical population by 50%.
^bOxidation inhibition.