This study aimed to appraise the chemical features such as total phenol (TP), total flavonoid (TF), total antioxidant capacity based on 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays of bran and grain in 10 genotypes of rice (Oryza sativa L.) grown in Iran. Based on two procedures of DPPH and FRAP, the results demonstrated that in terms of the amount of the antioxidants in the bran of genotypes of the tested rice, Genotype G4 reached the highest and genotype G6 reached the lowest mean. Also, the examination of the amount of the antioxidant in genotypes grain of the tested rice showed that genotype G4 reached the highest and genotype G6 reached the lowest mean in the antioxidant of the grain. Besides, the examination of phenol and flavonoid levels of grain and bran of the tested genotypes indicated that the genotype G3 reached the highest TP level and the genotype G4 reached the highest flavonoid level in this experiment and they were placed in group A in the mean comparison table. The correlation result between phenolic compounds and antioxidant procedures proved that there are significant correlations among traits in this study. پرونده مقاله