Nutrients, minerals, antioxidant pigments and phytochemicals, and antioxidant capacity of the leaves of stem amaranth

Abstract We evaluated 17 genotypes of stem amaranth ( Amaranthus lividus ) in terms of dietary fiber, moisture, carbohydrates, fat, ash, gross energy, protein, minerals, phytopigments, total antioxidant capacity (TAC), vitamins, total flavonoids (TFC), total polyphenols (TPC) and their variations. Stem amaranth leaves have abundant dietary fiber, moisture, carbohydrates, and protein. We found significant amount of potassium, calcium, magnesium (9.61, 24.40, and 29.77 mg g −1 DW), iron, manganese, copper, zinc, (1131.98, 269.89, 25.03, and 1006.53 µg g −1 DW), phytopigments such as chlorophyll a , chlorophyll ab chlorophyll b , (27.76, 42.06, and 14.30 mg 100 g −1 FW), betalain, betaxanthin, betacyanin (62.92, 31.81, 31.12 µg 100 g −1 FW), total carotenoids, beta-carotene (1675.38, 1289.26 µg g −1 FW),…