2.6. Antioxidant assays
The stock solutions were diluted to produce sample solutions
until an absorbance between 20 and 80% inhibition of the control
was obtained or located in the following linear ranges. For
DPPH, ABTS, ferric reducing antioxidant power, reducing power
and oxygen radical absorbance capacity, their linear ranges were
0–1000 M Trolox (R2 = 0.9981), 0–700 M Trolox (R2 = 0.9994),
0–600 M Trolox (R2 = 0.9995), 0–1000 M Trolox (R2 = 0.9982)
and 0–100 M Trolox (R2 = 0.9995), respectively. All solutions were
freshly prepared for each assay. Results were expressed as micrometer
Trolox equivalents antioxidant capacity per 100 g dry weight
(M TEAC/100 g dw).