Abstract
The cultivation of pseudocereal buckwheat (Fagopyrum esculentum, Moench) has gained raising attention, due to many positive physiological effects. Buckwheat grain contains large amount of proteins, starch, vitamins and does not contain gluten, which classify buckwheat products as functional ones. Also, buckwheat grains have been well known as a plant source of rutin, quercetin, kaempferol-3-rutinoside, and contain trace quantity of flavonol triglycoside. In order to investigate the distribution of these compounds and antioxidant activity in buckwheat, ethanolic extracts of different fractions were prepared and investigated: whole grain, dehulled grain, hull and two types of flours (wholegrain and light). For the purpose of antioxidant screening iron (III) reduction and 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) scavenging activities were applied. Total phenol and flavonoid contents of each extract were also determined.
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