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

Table 3.

Total antioxidant activity of hydroethanolic extract of Indian propolis (HEIP) and ascorbic acid

Conc. (µg) HEIP Ascorbic acid
% of inhibition (mean ± SD) EC50 (µg/mL) (mean ± SD) % of inhibition (mean ± SD) EC50 (µg/mL) (mean ± SD)
5 18.69 ± 1.79 27.51 ± 1.56 24.63 ± 2.49 13.72 ± 1.89
10 31.16 ± 2.37 37.30 ± 3.11
25 47.33 ± 2.82 78.43 ± 2.88
50 78.77 ± 2.74 94.67 ± 2.58
75 93.21 ± 4.24 97.05 ± 1.45
100 96.80 ± 1.43 98.19 ± 1.56