Antioxidant activity of the extract was evaluated using 2, 2-diphenyl-1-picrylhydrazyl test. A β-carotene-linoleic acid assay was also applied for the antioxidant ca-pacity. Total phenolic and flavonoid content, peroxide value and thiobarbituricacid-reactive substances (TBARs) were measured for the soybean oil samples. Experiments were carried out in triplicates and data were processed with ANOVA test by SPSS software (16.0).