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| | flour. The Columbia Encyclopedia, Sixth Edition. 2001-05 |
 | | Flour is also made from potatoes, peas, beans, peanuts, etc. Usually it refers to the finely ground and bolted (i.e., sifted through a fine sieve) flour of wheat, which forms the largest proportion of all flour milled in the United States, Canada, and W Europe. |
 | | In the United States, patent flour, freed of the bran and most of the germ, is the highest grade; clear flour is the second grade; and red dog, a low-grade residue, is used mainly for animal feed. |
 | | The composition of flour depends on the type of wheat and the milling processes; gluten is the chief protein, and starch the principal carbohydrate, although some sucrose, invert sugar, and dextrin may be present. |
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