a Red grape extract was found to have Ioxygen=0.26 at a concentration of 4.76 mM total phenols. RK, lotus root knot ectract; LR, lotus root
extract; GTP, green tea polyphenols. b Concentrations of extracts (LRK,LR and GTP) are expressed as mM total phenols. Each value of the antioxidative index is mean of two
determinationsS.D.