Ingredient · E920

Flour Improver:e920

Source
Animal-derived
Allergen
No
Role in food
L-cysteine is used as a dough conditioner in baked goods, helping to make dough …

What is Flour Improver:e920?

L-cysteine is an amino acid, a building block for proteins. It can be produced through fermentation or extracted from animal sources like feathers or hair. It is often used in food processing to improve dough characteristics.

Is Flour Improver:e920 vegan?

No. Flour Improver:e920 is animal-derived, so it is not vegan.

Is Flour Improver:e920 gluten-free?

It does not contain gluten.

Is Flour Improver:e920 a major allergen?

L-cysteine is not derived from any of the 9 major allergens.

What is Flour Improver:e920 used for?

L-cysteine is used as a dough conditioner in baked goods, helping to make dough more pliable and reducing mixing time.

Is Flour Improver:e920 safe?

L-cysteine is generally recognized as safe (GRAS) by the FDA when used as a food ingredient.

Why it's used

L-cysteine is used as a dough conditioner in baked goods, helping to make dough more pliable and reducing mixing time. It can also act as a flavor enhancer. It is commonly found in breads, pastries, and other savory bakery products.

Health notes

L-cysteine is generally recognized as safe (GRAS) by the FDA when used as a food ingredient. JECFA has evaluated L-cysteine and established an acceptable daily intake. There are no widespread health concerns associated with typical dietary intake of L-cysteine.

Allergen info

L-cysteine is not derived from any of the 9 major allergens. It does not contain gluten.

Foods that contain Flour Improver:e920

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Last updated: October 5, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.