Comparison of the antioxidant and anti-inflammatory activities of leaf extracts from grain amaranths (Amaranthus spp.)
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This study assessed the antioxidant and antiinflammatory 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.
Abstract
This study assessed the antioxidant and antiinflammatory 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.
참고문헌 (21)
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