Fig. 5. Antioxidant activity of xoconostle's methanolic extracts, fractions A (phenolic
compounds) and B (betalains) in reaction with 0.2 mMDPPH+ radical. ME=Methanol
extract, FA = Fraction A, and FB = Fraction B. Results are expressed as % inhibition of
DPPH (mean±SD, n=6). Identical letters above the bars indicate no significant
differences (level of significance pb0.05).