Minerals, vitamin C, phenolics, flavonoids and antioxidant activity of Amaranthus leafy vegetables  [2017]

Jiménez-Aguilar, Dulce M. Michael A. Grusak

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The objective of this study was to evaluate mineral, vitamin C, phenolic and flavonoid concentrations and antioxidant activity levels in 15 leafy Amaranthus species. Across species, the concentration ranges of Ca, K, Mg, P and phenolics, and activity ranges of antioxidants in amaranth leaves were 1.5–3.5mg/g, 5.5-8.8mg/g, 1.8–4.5mg/g, 0.5–0.9mg/g, 3.2–5.5mg gallic acid equivalents/g, and 38–90μmol Trolox equivalents/g (all values on a fresh weight [FW] basis), respectively. Amaranthus acanthochiton had the highest concentrations of Ca, Mg, Ni, Zn, and A. deflexus and A. viridis had the highest concentrations of Fe. A serving of any of the Amaranthus leaves (1 cup; 30g FW) would contribute from 13 to 34% of the daily value (DV) of Mg (DV=400mg; as established by the US Food and Drug Administration), and up to 68% of the DV of vitamin C (DV=60mg). In addition, A. acanthochiton would be considered a good source of Ca, Mn and Mo (10%–19% of the DV), and an excellent source of Mg and vitamin C (20% or more of the DV). Amaranth leafy vegetables should be promoted as a dietary source of essential nutrients and health-beneficial compounds.

Other subjects

  • minerals
  • ascorbic acid
  • potassium
  • antioxidants
  • AAPH
  • Minerals
  • U.S. FDA
  • antioxidant activity
  • manganese
  • Phenolics
  • nutrients
  • FW
  • DV
  • Amaranthus leaves
  • leaves
  • Amaranthus
  • Vitamin C
  • green leafy vegetables
  • zinc
  • Food and Drug Administration
  • Leafy vegetables
  • molybdenum
  • AA
  • nickel
  • CE
  • calcium
  • Antioxidant activity
  • magnesium
  • GAE
  • gallic acid
  • TE
  • Flavonoids
  • TCA
  • Daily value
  • iron
  • flavonoids

From the journal

Subtropical plant science

ISSN : 0889-1575