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Antioxidant activity of poplar, birch, pine buds and propolis extracts. Subgraph (A)—ABTS inhibition % of extracts (1 µg CAE/mL to 100 µg CAE/mL); subgraph (B)—DPPH inhibition % of extracts (1 µg CAE/mL to 100 µg CAE/mL); subgraph (C)—IC50ABTS concentration; subgraph (D)—IC50DPPH concentration. Subscripts of different letters indicate statistically significant differences between subjects (p < 0.05).
