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Table 5 Quenching of the DPPH Radical and H2O2 by Dietary Antioxidants

From: Dietary antioxidants protect gut epithelial cells from oxidant-induced apoptosis

Treatment

Cat's claw

Green Tea

Vitamin C

H2O2

ND

ND

4.6

DPPH

22.7

15.7†

5.2*

  1. 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