. 2020 Jan 24;9(2):103. doi: 10.3390/antiox9020103

Table 1.

Quantifications of polyphenols (TPC) and flavonoids (TFC) contents, antioxidant activity (DPPH^•, FRAP and ABTS^∙+ methods) from hydroethanolic pollen extract collected by Scaptotrigona affinis postica (TbHPE).

Sample	TPC (%) ^*	TFC (%) ^**	DPPH^•IC₅₀ (μg/mL)	FRAP (mmol Fe²⁺/g)	ABTS^•+ IC₅₀ (μg/mL)
TbHPE	9.30 ± 0.56	0.40 ± 0.04	273.08 ± 1.43 ^b	0.71 ± 0.04 ^b	87.29 ± 0.06 ^b
Trolox	-	-	3.08 ± 0.57 ^a	8.87 ± 0.35 ^a	3.67 ± 0.78 ^a

Values expressed by the mean of triplicate measurements ± standard deviation. When in same column, different letters (^a and ^b) indicates a significant difference (Tukey, p < 0.05). (*) expressed as gallic acid equivalent; (**) expressed as quercetin equivalent. DPPH^•, 2,2-diphenyl-1-picrylhydrazyl radical; FRAP, ferric reducing antioxidant power; ABTS^•+, 2,2′-azinobis-3-ethylbenzotiazoline-6-sulfonic acid. (-) unrealized.