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. 2015 Nov 21;68(5):1789–1800. doi: 10.1007/s10616-015-9931-4

Table 2.

Scavenging effect of hydroethanolic extract of Indian propolis (HEIP) and ascorbic acid on 2,2-diphenyl-1-picrylhydrazyl free radical (DPPH)

Conc. (µg) HEIP Positive control (ascorbic acid)
% of inhibition (mean ± SD) EC50 (µg/mL) (mean ± SD) % of inhibition (mean ± SD) EC50 (µg/mL) (mean ± SD)
5 12.9 ± 0.89 16.56 ± 1.29 27.56 ± 1.34 12.39 ± 1.34
10 29.8 ± 1.08 41.43 ± 0.92
25 69.4 ± 1.76 82.24 ± 1.67
50 82.7 ± 1.56 93.49 ± 2.08
75 95.6 ± 2.54 97.85 ± 1.87