Coeliac disease disease genotypes. It is suspected that some of them may have been beneficial by providing protection against bacterial infections. The majority of the proteins in food responsible for the immune reaction in coeliac disease are the prolamins. These are storage proteins rich in proline ("prol-") and glutamine ("-amin") that dissolve in alcohols and are resistant to proteases and peptidases of the gut. Prolamins are found in cereal grains with different grains having different but related prolamins: wheat (gliadin), barley (hordein), rye (secalin) and oats (avenin). One region of α-gliadin stimulates membrane cells, enterocytes, of the intestine to allow larger molecules
Wheat gluten (food) and chewiness of the final product. Very little is required, generally about 1 Tablespoon (15ml) per 2-3 cups (480-620 ml) of flour. The powdered form of wheat gluten (vital wheat gluten), is made by hydrating hard wheat flour to activate the gluten and then processing the hydrated mass to remove the starch, leaving only the gluten. The gluten is then dried and ground back into a powder. Seitan may be made from vital wheat gluten or from hard wheat flour (a.k.a. high-protein flour, high-gluten flour, or gluten flour). When seitan is made from vital wheat gluten, the powder is simply