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
Wheat gluten (food) rehydrated to form the gluten and then cooked. Seitan produced from wheat flour is a longer process. First a dough is made by hydrating the flour, then the dough is kneaded under running water to remove the starch from the dough, leaving only the gluten. The gluten is then cut into pieces and cooked via steaming, boiling, frying, or other methods. Wheat gluten is used both as a protein source and binding ingredient in pet foods. Wheat gluten from China adulterated by melamine was blamed as the cause of the 2007 pet food recalls. Wheat gluten (food) Wheat gluten is