- 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.