Antioxidant activity of various extracts and fractions of Chenopodium quinoa and Amaranthus spp. seeds |
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Authors: | Robert Yawadio Nsimba Hiroe KikuzakiYotaro Konishi |
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Affiliation: | Laboratory of Food Chemistry, Graduate School of Human Life Science, Osaka City University, Sugimoto 3-3-138, Sumiyoshi-ku, Osaka 558-8585, Japan |
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Abstract: | The antioxidant potency of various extracts and fractions from Chenopodium quinoa and Amaranthus sp. was evaluated using three established methods, specifically the DPPH scavenging activity, FRAP, and β-carotene bleaching assays. Satisfying results were obtained, which lead to expect the use of these seeds as health-promoting ingredients. The antioxidant activity was less correlated to the phenolics content suggesting that non-phenolic compounds might play major free radicals scavenging activity in studied plant materials. |
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Keywords: | AC Amaranthus cruentus AH Amaranthus hypochondriacus DPPH 1 1-diphenyl-2-picrylhydrazyl FRAP ferric reducing ability of plasma or ferric reducing antioxidant power TAE tannic acid equivalent TPTZ 2 4 6-tris(2-pyridyl)-1 3 5-triazine UV&ndash VIS ultraviolet&ndash visible |
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