Oat vary among oat varieties. Also, oats products are frequently cross-contaminated with other gluten-containing cereals during grain harvesting, transport, storage or processing. Pure oats contain less than 20 parts per million of gluten from wheat, barley, rye, or any of their hybrids. Use of pure oats in a gluten-free diet offers improved nutritional value from the rich content of oat protein, vitamins, minerals, fiber, and lipids, but remains controversial because a small proportion of people with celiac disease react to pure oats. Some cultivars of pure oat could be a safe part of a gluten-free diet, requiring knowledge of the oat
Corn gluten meal Corn gluten meal Corn gluten meal (CGM) is the principal protein of corn (maize) endosperm consisting mainly of zein and glutelin. It is a byproduct of corn processing that has historically been used as an animal feed. Despite the name, "corn gluten" does not contain true gluten, which is formed by the interaction of gliadin and glutenin proteins. In 1985, Dr. Nick Christians of Iowa State University discovered that CGM displayed pre-emergent herbicidal effects during a series of turf grass experiments. The use of corn gluten meal as an herbicide was patented in 1991, but, like many food-related substances used