This study investigates the relationship between the properties of dietary fiber (DF) rich wheat milling
by-products and their impact on bread making. From coarse bran over coarse and fine weatings to low
grade flour, the content of starch and lipids increased, while that of DF and ash decreased. Enzyme activity
levels differed strongly and were not related to other by-product properties. Average particle size of
the by-products was positively correlated with DF and ash contents and their hydration properties. When
meals from flour and by-products were composed on the same overall starch level to compensate for differences
in endosperm contamination in the by-products, bread specific volume was more strongly
depressed with fine weatings and low grade flour than with coarse bran and weatings. This suggests that
the properties of the former were intrinsically more detrimental to bread making than those of the latter.