500
. (c) Whole-wheat flour contains the bran and the germ, and thus is rich in vitamins, minerals, and fiber. Wheat flour,
whether bleached or unbleached, loses vitamins and minerals when it is refined. Even when it is enriched, only
some—not all—of these nutrients are added back in. "Twelve-grain" or "seven-grain" may not mean anything, since
the bread can still be mostly re-fined wheat ("white") flour. Most rye and pumpernickel contain little or no whole grain,
but if you can find whole-grain versions, they are good, too.
If you're looking for the most fiber in a loaf of bread, the operative words
are (a) unbleached, (b) enriched wheat flour, (c) whole-wheat flour, or (d)
twelve-grain.