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Comparison of the antioxidant and anti-inflammatory activities of leaf extracts from grain amaranths (Amaranthus spp.)

  • Ji, Hyo Seong (Department of Industrial Plant Science and Technology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University) ;
  • Kim, Gayeon (Department of Industrial Plant Science and Technology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University) ;
  • Ahn, Min-A (Department of Industrial Plant Science and Technology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University) ;
  • Chung, Jong-Wook (Department of Industrial Plant Science and Technology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University) ;
  • Hyun, Tae Kyung (Department of Industrial Plant Science and Technology, College of Agricultural, Life and Environmental Sciences, Chungbuk National University)
  • Received : 2022.01.30
  • Accepted : 2022.03.23
  • Published : 2022.03.31

Abstract

This study assessed the antioxidant and anti-inflammatory activities of leaf extracts from grain amaranths (Amaranthus spp.). Among all the extracts, the ethanol extract of Amaranthus cruentus leaves (Ar) exhibited the highest antioxidant activity, including the DPPH free radical scavenging activity and ORAC. In addition, Ar strongly inhibited nitric oxide production by suppressing the MEK/ERK signaling pathway in lipopolysaccharide-stimulated RAW264 murine macrophages. HPLC analysis revealed 13 polyphenolic compounds in the leaf extracts of grain amaranth and indicated that Ar contained more rutin than the other extracts. Taken together, these results show the impact of species diversity on the phytochemical contents and bioactivities of plant extracts and suggest that the nonedible parts, such as leaves, of A. cruentus should be considered for use as crude drugs and dietary health supplements.

Keywords

References

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