The antioxidant activity of aqueous extracts was determined
using the Trolox equivalent antioxidant capacity (TEAC) with ABTS
and DPPH radicals and the FRAP method. The TEAC assay with
ABTS radicals was carried out according to Re et al. (1999), and
the TEAC assay with DPPH radicals was carried out according to
a procedure described by Yen and Chen (1995). The antioxidant
activity measured using FRAP was performed according to a
method by Benzie and Strain (1996). TEAC results are expressed
as lmol of Trolox equivalents per 1 g of dry matter (DM). Data
are reported as the mean of four measurements.