Ingredient

Organic Aspergillus Oryzae

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Source
Not animal-derived
Allergen
No
Role in food
This ingredient is used as a fermentation starter to produce enzymes that break down …

What it is

Organic Aspergillus oryzae is a type of fungus, often called koji. It is commonly used in Asian food production to ferment grains like rice, barley, or soybeans. This fermentation process breaks down starches and proteins, creating distinct flavors and aromas.

Why it's used

This ingredient is used as a fermentation starter to produce enzymes that break down starches and proteins. It is essential for making foods like soy sauce, miso, and sake. You can find it in various sauces, dressings, and fermented grain products.

Health notes

Aspergillus oryzae is generally recognized as safe (GRAS) by the FDA for use in food. It is a key component in many fermented foods that are part of traditional diets. International bodies like JECFA and EFSA have evaluated enzymes derived from Aspergillus oryzae. These enzymes are considered safe when used as food additives.

Allergen info

Aspergillus oryzae itself is a fungus and not one of the nine major allergens. However, it is often grown on grains like soy or wheat, which can be allergens. Check product labels for potential cross-contamination or if the Aspergillus oryzae was grown on an allergenic substrate.

Products containing Organic Aspergillus Oryzae

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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.