Care for some fertilizer with your burger?
(NEWSER) - Duck feathers, human hair, fertilizer: These are among the ingredients you may be ingesting every time you chow down on fast food. That's because the FDA has deemed certain additives to be "generally recognized as safe," even though it may creep you out to learn of them. On Mother Nature Network , Melissa Breyer runs down eight of the most disturbing:
- Duck feathers and human hair: These two unappealing things are the most common sources for an amino acid, l-cysteine, used to make dough easier to process. McDonald's uses l-cysteine, the duck feather kind, in its apple pie.
- Fertilizer: Ammonium sulfate is also commonly used, as "yeast food for bread," in fast food bakery products. But it can also act as a fertilizer for alkaline soils.
More»