Question and Flour Problems : Colour

1.Although the ash content is only 0.5%, the
flour has a dark colour. Why is that?
There are wheat varieties with a higher pigment
content (compare, for instance, U.S. Hard Red Spring Wheat with U.S. Hard
White).
2. How can I brighten the colour of the flour? Chlorine, Chlorine dioxide (both are gaseous) or benzoyl peroxide (powder) can be used for bleaching. In contrast to chlorine and chlorine dioxide, benzoyl peroxide has almost no maturing effect on the flour. The treatment with benzoyl peroxide takes 24 – 72 h to become visible.
3. How can a brighter flour or bread crumb be obtained? A brighter flour can be obtained with a lower extraction rate, because the outer layers of the wheat kernel contain more pigments. Once the flour has been produced, treatment with chlorine and chlorine derivatives achieves a brighter colour, but is not acceptable in many cases for various reasons. The addition of benzoyl peroxide also results in a brighter colour, visible 24 -72 h after treatment of th…
2. How can I brighten the colour of the flour? Chlorine, Chlorine dioxide (both are gaseous) or benzoyl peroxide (powder) can be used for bleaching. In contrast to chlorine and chlorine dioxide, benzoyl peroxide has almost no maturing effect on the flour. The treatment with benzoyl peroxide takes 24 – 72 h to become visible.
3. How can a brighter flour or bread crumb be obtained? A brighter flour can be obtained with a lower extraction rate, because the outer layers of the wheat kernel contain more pigments. Once the flour has been produced, treatment with chlorine and chlorine derivatives achieves a brighter colour, but is not acceptable in many cases for various reasons. The addition of benzoyl peroxide also results in a brighter colour, visible 24 -72 h after treatment of th…