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