The loaf volume of composite bread samples ranged from 264.33 to 278.00 ml,
and the specific volume ranged from 1.45 to 1.59 ml/g ml.
This result showed that as level of soybean flour increases,
the decrease in specific volume was more remarkable. The
specific volume, which is the ratio of loaf volume and weight,
has been generally adopted in the literature as a more reliable
measure of loaf size (Shittu et al., 2007)