Table 1.

DPPH radical-scavenging activity of the SNAH and IC₅₀ values.

Compounds	DPPH 1 Radical Scavenging Activity (%)				IC50 (μM)
	62.5 μM	125 μM	250 μM	500 μM
SNAH	25% ± 5% 2	48% ± 2%	73% ± 2%	87% ± 1%	172
Ascorbic acid	19% ± 1%	49% ± 5%	72% ± 2%	84% ± 3%	192

¹ 2,2′-diphenyl-1-picrylhydrazyl; ² Values are expressed as mean ± SD of triplicate determinations.