Ingredient · E319

TBHQ As Antioxidant

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Source
Not animal-derived
Allergen
No
Role in food
TBHQ is added to foods to prevent oxidation, which can cause fats and oils …

What it is

TBHQ, or tertiary butylhydroquinone, is a synthetic antioxidant. It is a white to off-white crystalline powder. TBHQ is produced through a chemical process involving hydroquinone and isobutylene.

Why it's used

TBHQ is added to foods to prevent oxidation, which can cause fats and oils to go rancid and spoil. This helps extend the shelf life of products containing fats and oils. It is commonly found in fried and baked goods, processed meats, and snack foods.

Health notes

In the U.S., TBHQ is permitted as a food additive and is generally recognized as safe (GRAS) by the FDA when used within specified limits. Regulatory bodies like JECFA and EFSA have evaluated TBHQ. Some studies in animals have suggested potential health effects at very high doses, but evidence at typical human consumption levels is mixed and not conclusive. The FDA continues to permit its use.

Allergen info

TBHQ is a synthetic chemical and is not derived from any of the nine major allergens. It does not contain gluten.

Products containing TBHQ As Antioxidant

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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.