Reducing power
The reducing power of the ethanolic extracts was measured according to
the method of O y a i z u (1986). Various concentrations (0.1, 0.5, 1.0 and 2.0
mg/mL for buckwheat flour extracts and 10, 20, 30 and 40 mg/mL for wheat
flour extracts) of the ethanolic extracts (0.5 mL) were mixed with 2.5 mL of