A progressive increase in the level of barley flour in the blends increased reducing power significantly (p 0.05) which is attributed to the higher reducing power of the barley flour as compared to refined wheat flour.
Gujral et al. (2012) reported that the reducing power of the wheat flour was 23.4 mg AAE/g whereas barley exhibits higher reducing power that ranged from 47 to 61.2 mmol AAE/g of flour (Sharma & Gujral,2011).
Baking of cookies lead to a significant (p 0.05) increase in reducing power and it ranged from 44.7 to 57.3%. The highest increase was observed for cookies prepared from only wheat flour.
A similar increase in reducing power upon baking has been reported
by Filipcev et al. (2011) for bread prepared by incorporation of
buckwheat and rye flour to wheat flour.