Gluten

Gluten is found in many grains.

It is in wheat, barley, and rye.

When you add water to dough, gluten forms. It makes the dough stretchy. This helps bread rise and stay in shape.

Gluten also makes food chewy. Pizza and bagels use flour with more gluten. Pastries use flour with less gluten to stay soft.

Some people use gluten to make fake meat. It can taste like duck or beef. It is also in pet food.

For some people, gluten can make them sick. They must eat food without it to stay well.

Gluten is a protein found in certain grains.

You can find it in wheat, barley, and rye. It is also in some types of oats.

Gluten makes dough stretchy. It forms when you add water to flour and knead it. This stretchiness helps bread rise. It also helps the bread keep its shape. Gluten can change how food feels in your mouth. Flour with lots of gluten makes chewy foods like bagels or pizza. Flour with less gluten makes soft foods like pastries.

Some people use gluten to make meat for vegetarians. This is called seitan. It can look and taste like duck or beef.

For some people, gluten is not safe. People with celiac disease have a hard time with gluten. Their bodies react to it. This can hurt the inside of their small intestine.

To stay healthy, these people must eat a gluten-free diet. This means they avoid grains like wheat and barley.

Gluten is a special kind of protein found in certain grains.

It is a structural protein, which means it helps give things their shape. Most people know gluten from eating bread or pasta. It is found in all types of wheat, like durum and spelt. It is also in barley and rye. Some types of oats have it too. Even hybrid grains like triticale contain gluten. This protein is very important to the food industry because it is useful and does not cost much to produce.

When you make dough, gluten does a very important job. It forms when you mix flour with water and knead it. This creates a stretchy network of proteins called glutenin and gliadin. As you knead, these proteins link together. If you add yeast, the dough makes bubbles of gas. The gluten network traps these bubbles, which helps the bread rise. When you bake the bread, the gluten and starch harden to keep the shape. This process is why some breads are chewy and others are soft.

Different foods need different amounts of gluten to feel right. If a baker wants chewy food like bagels or pizza, they use flour with a lot of gluten. If they want tender food like pastries, they use flour with less gluten. Bakers can even measure this strength using a tool called a farinograph. In big factories, machines make pure gluten by kneading flour under water. They wash away the starch and dry the gluten into a fine powder. This powder can be added to other doughs to make them rise more or become more stable.

Gluten is used for many things besides bread. It is often used to make imitation meats, which are foods that look like meat for vegetarians.

This is sometimes called seitan. It can be made to look like duck, beef, or even pork. When it is cooked in broth, it soaks up flavor and becomes firm. Gluten is also found in things like soy sauce, beer, and even ketchup. It is even used in some cosmetics and pet foods to add extra protein.

For some people, gluten can cause health problems. This is called a gluten-related disorder. One common type is celiac disease, which affects about 1 to 2 percent of people.

In people with this disease, the body's immune system reacts to gluten. This reaction can hurt the small intestine and damage the tiny parts called villi. Other people might have gluten sensitivity or wheat allergies. To stay healthy, people with these conditions must follow a gluten-free diet. This means they avoid grains like wheat, barley, and rye.

Gluten is a structural protein complex found naturally in specific cereal grains.

It is valued by many industries because of its unique physical properties. In bread wheat, gluten makes up between 75% and 85% of the total protein content. These proteins provide viscoelastic and adhesive qualities. This means they allow dough to be stretchy and able to hold a specific shape. Because gluten is relatively low in cost, it is useful for both food and non-food production.

At a molecular level, gluten is composed of two main types of proteins. These are called glutenins and gliadins. Glutenins can be divided into high molecular and low molecular types. Gliadins are also categorized into alpha, beta, gamma, and omega types. Other grains contain similar proteins with different names. In barley, these are called hordeins. In rye, they are known as secalins. In oats, they are called avenins. While proteins in maize and rice are sometimes called gluten, they do not cause the same health issues in people with celiac disease.

The formation of gluten requires water and mechanical action like kneading. Glutenin molecules create cross-links via disulfide bonds to form a submicroscopic network. This network attaches to gliadin, which provides viscosity and extensibility to the mixture. If yeast is added, fermentation produces carbon dioxide bubbles. The gluten network traps these bubbles, which causes the dough to rise. During baking, the gluten coagulates alongside starch to stabilize the final shape. This process also influences how bread stays fresh or becomes stale.

Bakers choose different flours based on the desired texture of the food. Flour with high gluten content, such as hard wheat, creates chewy products like pizza and bagels. Flour with lower gluten content is used for tender items like pastries. The elasticity of the dough is proportional to its low molecular weight glutenins. These contain the sulfur atoms necessary for the cross-linking process. In the professional baking industry, the strength of gluten is measured using a tool called a farinograph. This helps bakers develop recipes for various baked goods.

In industrial settings, gluten can be extracted as a concentrated powder. Machinery kneads a wheat flour slurry until the gluten forms a mass. This mass is collected through centrifugation. A screw press removes about 65% of the water from the wet gluten. The remaining moisture is removed by spraying the substance through an atomizer nozzle into a drying chamber. The final product is a flour-like powder with 7% moisture. This powder can be added to dough to increase volume and structural stability.

Gluten serves many roles in modern diets and products. It is the primary ingredient in seitan, which is used to make imitation meats. These products can resemble beef, chicken, duck, fish, or pork. When cooked in broth, gluten absorbs liquid and flavor while becoming firm to the bite. This provides a supplemental protein source for many vegetarians. Gluten is also found in unexpected places like ketchup, ice cream, soy sauce, and beer. It is even used in cosmetics, hair products, and some pet foods.

For some, gluten causes gluten-related disorders. These include celiac disease, which affects 1% to 2% of the general population. It also includes non-celiac gluten sensitivity, which affects 0.5% to 13% of people. Other conditions include wheat allergy, gluten ataxia, and dermatitis herpetiformis. In celiac disease, gluten peptides trigger an immune response. This response can cause inflammation or the destruction of the intestinal villi. These disorders are managed through a strict gluten-free diet.

Research shows that gluten peptides, specifically gliadin, are highly immunogenic. This means they can trigger an immune response in certain people. In laboratory studies, these peptides can cause cell death and inhibit the synthesis of DNA and RNA. Some scientists thought rising disorder rates were due to modern wheat varieties. However, a 2020 study of 60 wheat cultivars from 1891 to 2010 found no change in gluten content. The study suggested that the harvest year had a larger effect on protein composition than the cultivar itself.