Effect of Processing on the Flavonoid Content in Buckwheat (<i>Fagopyrum </i><i>e</i><i>sculentum</i> Möench) Grain
D. Dietrych-Szóstak, Wiesław Oleszek
Journal of Agricultural and Food Chemistry
Abstract
Six flavonoids have been isolated and identified in buckwheat grain. These are rutin, orientin, vitexin, quercetin, isovitexin, and isoorientin. Rutin and isovitexin are the only flavonoid components of buckwheat seeds while hulls contain all six identified compounds. The total flavonoid concentration in the seeds was 18.8 and in the hulls 74 mg/100 g of dry matter. Dehulling the grain by using different temperature regimes resulted in drastic reductions of the total flavonoid concentration in the grain (by 75% of the control) and smaller but significant (15-20%) reduction in the hulls.
Extracted Claims
12 claims extracted from this paper into the knowledge graph
rutin is present in buckwheat seeds
“Rutin and isovitexin are the only flavonoid components of buckwheat seeds”
total flavonoid concentration is 18.8 mg/100 g of dry matter
“The total flavonoid concentration in the seeds was 18.8 and in the hulls 74 mg/100 g of dry matter”
isovitexin is present in buckwheat hulls
“hulls contain all six identified compounds”