The efficiency of the chemiluminescence luminol method and colorimetric DPPH and ABTS methods in evaluating the antiradical
capacity of pure compounds and plant extracts with antioxidant potential is compared. In case of pure compounds, the values of
parameter ‘n’ (number of radicals quenched per molecule of antiradical) for ascorbic acid, p-hydroquinone, catechol, quercetin, and
rutin are similar when measured by colorimetric assays; however, considerably lower values of n are obtained with the luminol assay.
The antiradical activity of extracts from male and female individuals of Baccharis burchelli and Baccharis crispa were determined
by the luminol assay and expressed using the new Trolox® percentage (%Trolox®) parameter.