Antioxidative activities of wheat flours (type 500 and wholegrain) and
buckwheat flours (light and wholegrain) were tested using 1,1-diphenyl-2-picrylhydrazyl
(DPPH·)-scavenging activity, reducing power and chelating activity on Fe2+. Also, the content
of the total phenolics of ethanolic extracts was estimated.
Polyphenolics content (expressed as gallic acid equivalent, GAE) in wheat flours varied
between 37.1 and 137.2 mg GAE/g extract, while its content in buckwheat flour were at
least four time higher and ranged between 476.3 and 618.9 mg GAE/g extract.
Ethanolic extracts of buckwheat flours exhibited higher antioxidant activities in all
the assays, except for chelating activity.
Regarding all the obtained results, it can be concluded that bakery products produced
with buckwheat flour could be regarded as potential functional foods.
KEY WORDS: antioxidant activity, polyphenolics, wheat and buckwheat flours