PHYSICAL PROPERTIES OF PROTEIN EXTRACT POWDER FROM STALE BREAD AND EVALUATION OF ITS USE IN WHEAT BREAD CONTAINING CHICKPEA FLOUR

Abstract

In this study, it was aimed to investigate the physical properties of protein extract powder from stale bread and its potential use in chickpea flour added wheat bread formulations. Chickpea flour was added into wheat flour at a 2:3 ratio, and the protein extract at 6.5 % and 13 % of total flour mix (w/w). The moisture content and water activity of the powdered protein extract were 5.55% and 0.58, respectively. The bulk density and tapped density were 830 kg.m-3 and 910 kg.m-3, respectively. Hausner ratio was measured as 1.10, which indicates free-flowing property. Increasing the addition of protein extract from 6.5% to 13% resulted in increased loaf volume from around 283 mL to 307 mL per loaf.