A gluten-free diet (GFD) is a nutritional plan that strictly excludes gluten, which is a mixture of prolamin proteins found in wheat, as well as barley, rye, and oats. The inclusion of oats in a gluten-free diet remains controversial, and may depend on the oat cultivar and the frequent cross-contamination with other gluten-containing cereals.
Wheat
Quinoa is a pseudocereal that is gluten-free.
Gluten-free bread made of a mixture of flours like buckwheat flour, tapioca flour, millet flour and psyllium seed husks. Special flour mixes can be bought for bread-making purposes.
Gluten-free rice flour
Gluten is a structural protein naturally found in certain cereal grains. The term gluten usually refers to a wheat grain's prolamins, specifically glutelin proteins, that naturally occur in many cereal grains, and which can trigger celiac disease in some people. The types of grains that contain gluten include all species of wheat, and barley, rye, and some cultivars of oat; moreover, cross hybrids of any of these cereal grains also contain gluten, e.g. triticale. Gluten makes up 75–85% of the total protein in bread wheat.
Bread produced from wheat grains contains gluten.
Wheat, a prime source of gluten
Cross-section of a baguette showing a strong gluten network
Gluten is often used in imitation meats (such as this mock duck) to provide supplemental protein in vegetarian diets
