Health

Q&A: Is gluten-free the way to be? A dive into the science

In the past decade, products bearing "gluten-free" labels have taken grocery store shelves by storm. But for generations of people who learned about food groups from visuals of pyramids with "breads and cereals" as their ...

Diseases, Conditions, Syndromes

What is celiac disease?

Celiac disease is a chronic disease that can't be cured, but treatment can help with symptoms.

Gastroenterology

Recommendations updated for management of celiac disease

In clinical guidelines published in the January issue of the American Journal of Gastroenterology, updated recommendations are presented for the evaluation and management of patients with celiac disease (CD), defined as a ...

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Gluten

Gluten (from Latin gluten, "glue") is a protein composite found in foods processed from wheat and related grain species, including barley and rye. It gives elasticity to dough, helping it to rise and to keep its shape, and often giving the final product a chewy texture.

Gluten is the composite of a gliadin and a glutelin, which is conjoined with starch in the endosperm of various grass-related grains. The prolamin and glutelin from wheat (gliadin, which is alcohol-soluble, and glutenin, which is only soluble in dilute acids or alkalis) compose about 80% of the protein contained in wheat seed. Being insoluble in water, they can be purified by washing away the associated starch. Worldwide, gluten is a source of protein, both in foods prepared directly from sources containing it, and as an additive to foods otherwise low in protein.

The seeds of most flowering plants have endosperms with stored protein to nourish embryonic plants during germination. True gluten, with gliadin and glutenin, is limited to certain members of the grass family. The stored proteins of maize and rice are sometimes called glutens, but their proteins differ from gluten.

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