Antioxidant activity of grain of einkorn (Triticum mono-coccum L.), emmer (Triticum dicoccum Schuebl (Schrank)) and spring wheat (Triticum aestivum L.) varieties.

摘要

Wheat and cereals in general are consumed in large quantities worldwide and contribute significantly to the intake of antioxidants with beneficial health effects. In precise 2-yr field experiments, 2 varieties of einkorn wheat, 2 varieties of emmer wheat and 3 varieties of spring wheat in 2008, and a further 2 spring wheat varieties, 3 einkorn varieties and 3 emmer wheat varieties in 2009, were evaluated for antioxidative activity (AOA) using 2,2-diphenyl-1-picrylhydrazyl assay (DPPH). Higher grain AOA was observed in emmer (215.4-257.6 mg Trolox/kg DM) and einkorn (149.8-255.8 mg Trolox/kg DM) varieties, while in spring varieties AOA ranged between 195.8 and 210.0 mg Trolox/kg DM. A linear correlation between total polyphenols and AOA was determined (r = 0.739, P <= 0.05). Emmer and einkorn wheat varieties showed high AOA and it is suggested that they could be promising sources of these nutritionally appreciated grain constituents.