Inhibition on linoleic acid peroxidationwas measured following
the method of Lai et al. (2009), rice bran extract (0.5 mg) dissolved
in 0.5 mL of DMSO was mixed with linoleic acid (LA) emulsion
(2.5 mL, 0.02 mol/L, pH 7.0) and phosphate buffer (2.0 mL, 0.2 mol/
L, pH 7.0) in a test tube. The mixed solution was then incubated at
37 C for 72 h for completing color development rising from
FeCl2ethiocyanate interaction. The absorbance at 500 nm, an index
of the peroxide value, of the resultant solution was then checked
(UVeVIS 1700, Shimadzu, Japan). Butylated hydroxyl anisole (BHA)
was examined for reference. All data were means of triplicate