Table 5

Quenching of the DPPH Radical and H₂O₂ by Dietary Antioxidants

Treatment

Cat's claw

Green Tea

Vitamin C

H₂O₂

ND

ND

4.6

DPPH

22.7

15.7†

5.2^*

Results are expressed as the half-maximal concentration (EC₅₀, μg/ml) required to quench either H ₂O₂ or DPPH radicals, determined by inhibition of absorbance at 240 and 515 nm, respectively. ^*P < 0.05 vs. other treatments † P < 0.05 vs. Cat's claw ND Not detected

Miller et al. BMC Complementary and Alternative Medicine 2001 1:11   doi:10.1186/1472-6882-1-11