Table 5: Total phenolic content and antioxidant activities of hydrophilic fraction of Tonda di Villacidro, Tonda di Cagliari, Semidana, and Bosana EVOO.

AssayTonda di VillacidroTonda di CagliariSemidanaBosana
MinMaxMean±SDMinMaxMean±SDMinMaxMean±SDMinMaxMean±SD

Total phenols
(mg GAE/kg)
158.40219.50182.3522.54142.80388.00261.1883.83133.10249.20179.7342.64249.40421.00335.20121.34
DPPH
(mmol TEAC/kg)
0.080.520.250.160.130.520.290.140.100.640.290.180.511.681.170.37
ABTS
(mmol TEAC/kg)
0.090.330.220.090.190.520.330.120.110.770.340.220.551.881.190.43
FRAP
(mmol Fe2+/kg)
0.391.030.880.230.521.571.020.360.361.660.990.391.422.952.380.52

GAE: gallic acid equivalent. DPPH and ABTS values are expressed as TEAC millimolar concentration, obtained from a Trolox solution having an antiradical capacity equivalent to that of the dilution of the EVOO. FRAP value is expressed as Fe2+ millimolar concentration, obtained from a FeSO4 solution having an antioxidant capacity equivalent to that of the dilution of the EVOO.