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Which change would NOT reduce the ash content of flour?

  • A.Improving purifier performance
  • B.Conditioning the wheat properly
  • C.Removing more of the bran before the reduction passages
  • D.Raising the extraction rate

Answer: D

Correct answer: Raising the extraction rate

Raising extraction is the one change that increases ash rather than reducing it, since it draws in the fractions nearest the bran. The other three all help: better purification removes bran flakes from the semolina, proper conditioning keeps the bran in flakes rather than shattering it into the flour, and removing more bran before the reduction passages keeps it out of the flour stream altogether.

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