Nitric oxide radical scavenging assay. The nitric oxide radical scavenging activity of T. chebula, T. belerica and E. officinalis extracts and standard curcumin. The data represents the % of nitric oxide inhibition. Each value represents mean ± S.D. (n = 6). ***p < 0.001 vs 0 μg/ml.
Hazra et al. BMC Complementary and Alternative Medicine 2010 10:20 doi:10.1186/1472-6882-10-20