Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6377738 | Journal of Cereal Science | 2016 | 28 Pages |
Abstract
The objective of this study was to characterize the flavonoid compounds found in the different grain parts of common and tartary buckwheat, and to determine the contribution of these flavonoids to the antioxidant properties of buckwheat. Eight flavonoid compounds were quantified and their antioxidant activity determined by FRAP, DPPH, and ABTS assays. Of the flavonoid compounds identified rutin was the most abundant, particularly in tartary buckwheat, in which it comprised approximately 90% of total flavonoid content. Flavan-3-ols were detected in common but not tartary buckwheat, and quercetin was detected only in tartary buckwheat. Flavonoid content-in particular, levels of rutin, orientin, and/or epicatechin gallate-was found to influence the total antioxidant activity of buckwheat. Results from this study indicate that antioxidant activity is not only closely associated with flavonoid content, but that different flavonoids contribute differently to the total antioxidant activity of common and tartary buckwheat.
Keywords
GAEQuercetin (PubChem CID: 5280343)Orientin (PubChem CID: 5281675)Isovitexin (PubChem CID: 162350)Flavan-3-olVitexin (PubChem CID: 5280441)TPTZ(−)-Epicatechin gallate (PubChem CID: 367141)FRAPABTSDPPH2,4,6-tris(2-pyridyl)-s-triazine(+)-catechin (PubChem CID: 9064)(−)-epicatechin gallate(±)-6-hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid2,2-diphenyl-1-picrylhydrazylgallic acid equivalentsECGTrolox EquivalentsTroloxOrientinPearson's correlation coefficientAntioxidant activityferric reducing antioxidant powerBuckwheat
Related Topics
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Agricultural and Biological Sciences
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Authors
Lan-Sook Lee, Eun-Ji Choi, Chang-Hee Kim, Jung-Min Sung, Young-Boong Kim, Dong-Ho Seo, Hyun-Wook Choi, Yun-Sang Choi, Jun-Seok Kum, Jong-Dae Park,