Gluten-free beer not contain gluten, do not trigger an autoimmune response in celiacs. Some brewers brew with barley or rye, and reduce the level of gluten to below 20 ppm. In most countries this technically classifies them as gluten-free beers. These brewers believe they are safe to drink. The brewers argue that the proteins from barley are converted into non-harmful amino acids. Statements from brewers show that their scientists feel confident that their product is non-harmful to those who are gluten intolerant. Some celiacs report problems drinking these beers. However, there is some concern and evidence that the claim is not true.(for
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