- Amaranth phenolic and anthocyanins have a powerful biological activity, which attracts scientists for their investigation. In this present study, the total phenolic content in leaves and stems of different amaranth cultivars was determined by Folin- Ciocalteu method using Gallic acid as standard, And the quantification of the total anthocyanin was performed by microplate spectrophotometric method. The results showed a higher quantity of antioxidant polyphenols in leaves than in stems. The total phenolic content ranged from 65.7677 ± 6.63to 542.323 ± 5.57 µg / ml of extract and total anthocyanin content from 0.054632 to 1.15832%. Among the total cultivars of amaranth studied, the highest concentration of anthocyanins was found in A. cru PT in both leaves and stems and the highest total phenolic content in leaves of A. hypo P and stems of A. hyb O; while the highest amino acid content observed in leaves of A. cru HRD and stems of A. hyb O. It was clearly observed that cultivars of amaranthus caudatus had shown lower antioxidant potential than others and the results revealed that all amaranth cultivars analyzed in this study were the source of phenols in different proportion within the cultivar.

Keywords : Amaranth Cultivars, Anthocyanin, Gallic Acid, Total Phenolic Content.