What is gluten?
Gluten is a protein composed of a mixture of glutelin and giadin. When combined the result is a gluey substance. Foods that contain gluten come from the botanical family, Triticum spp, also known as the wheat family. The wheat family includes: wheat, oats, barley, rye, spelt, kamut, and triticale. Food products containing any of these ingredients may contain gluten.
In 2007, FDA proposed to allow manufacturers to label a food gluten-free if the food does not contain any of the following:
- an ingredient that is any type of wheat, rye, barley, or crossbreeds of these grains
- an ingredient derived from these grains and that has not been processed to remove gluten
- an ingredient derived from these grains and that has been processed to remove gluten, if it results in the food containing 20 or more parts per million (ppm) gluten
- 20 ppm or more gluten