Ingredient

Protease 4.5

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add Protease 4.5 to help break down proteins, which can improve texture and …

What it is

Protease 4.5 is an enzyme that breaks down proteins. It is typically produced by fermenting specific strains of Aspergillus fungi. The enzyme is then purified and standardized for use in food.

Why it's used

Manufacturers add Protease 4.5 to help break down proteins, which can improve texture and digestibility in certain foods. It is often found in protein supplements, baked goods, and some dairy products.

Health notes

Protease 4.5 is generally recognized as safe (GRAS) by the FDA for use in food. Enzymes like Protease 4.5 are common in the digestive system and are broken down during digestion. International bodies like JECFA have evaluated enzymes used in food, and they are generally considered safe when consumed at typical levels.

Allergen info

Protease 4.5 is derived from fungi and is not one of the nine major allergens. It does not contain gluten.

Products containing Protease 4.5

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Last updated: September 28, 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.