1997
DOI: 10.1021/jf9605557
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Antioxidant Compounds from Buckwheat (Fagopyrum esculentum Möench) Hulls

Abstract: Ethanolic extracts of buckwheat (Fagopyrum esculentum Möench) hulls were separated by Sephadex LH-20 column chromatography into eight fractions. Five of the fractions exhibited peroxyl radical-scavenging activity by inhibiting the oxidation of methyl linoleate in solution. Two of the antioxidant fractions contained proanthocyanidins (condensed tannins) from the color reaction of these fractions with HCl under heat treatment. Five antioxidant compounds were isolated by preparative HPLC and identified as quercet… Show more

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Cited by 177 publications
(132 citation statements)
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“…As mentioned above, vitexin was characterised by a very low antioxidant activity. A similar observation was made for isovitexin [Watanabe et al 1997;Zielińska & Zieliński, 2011]. Acc.…”
Section: Resultssupporting
confidence: 80%
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“…As mentioned above, vitexin was characterised by a very low antioxidant activity. A similar observation was made for isovitexin [Watanabe et al 1997;Zielińska & Zieliński, 2011]. Acc.…”
Section: Resultssupporting
confidence: 80%
“…The higher antioxidant activity of fraction IV compared to fraction III noted in our study (Figures 2-4) was the resultant of the contents of fl avonoids (Table 2) and their individual activities, being usually higher compared to rutin activity. The peroxyl radical scavenging activity of fl avonols isolated from buckwheat hulls was decreasing for: quercetin > hyperoside > rutin [Watanabe et al, 1997]. In turn, inhibition of methyl linoleate oxidation by quercetrin was lower than by quercetin but stronger than by rutin [Hopia & Heinonen, 1999].…”
Section: Resultsmentioning
confidence: 95%
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“…It has been previously reported that rutin is contained in not only the buckwheat kernel, but also the hulls (Watanabe et al 1997). Therefore, it is thought that the rutin in buckwheat hulls is transferred to the kernel by the soaking treatment.…”
Section: Resultsmentioning
confidence: 99%