Defatted sesame seed flour recovere

Defatted sesame seed flour recovered as a sesame oil extraction
byproduct was provided by Shinsei Co., Ltd. (Kitanagoya, Japan).
Two different colored varieties were used: white sesame (imported
from Paraguay) and gold sesame (imported from Turkey), which
are used for oil extraction by the company.
2,2-Diphenyl-1-picrylhydrazyl (DPPH) was obtained from
Wako Pure Chemical Industries (Osaka, Japan) and 6-hydroxy-
2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), catechin,
fluorescein sodium salt (FL), and 2,20-azobis(2-amidinopropane)
dihydrochloride (AAPH) were purchased from Sigma–Aldrich (St.
Louis, MO). Vanillic acid was purchased from Nacalai Tesque Inc.
(Kyoto, Japan) and ferulic acid was from LKT Laboratories Inc. (St.
Paul, MN). Methanol used was of HPLC grade and all other solvents
used in this study were of analytical grade.