With TBHQ And Citric Acid To Preserve Freshness

TBHQ (tertiary butylhydroquinone) is a synthetic antioxidant. It is produced industrially from hydroquinone and isobutylene. TBHQ works by preventing oxidation, which can cause fats and oils in food to go rancid.

Manufacturers add TBHQ to foods containing fats and oils to prevent them from spoiling and to extend shelf life. It is often used in combination with other antioxidants like citric acid. TBHQ is commonly found in baked goods, snack foods, and some processed meats.

In the US, TBHQ is approved by the FDA as a food additive. It is also generally recognized as safe (GRAS) for use as an antioxidant. International bodies like JECFA and EFSA have evaluated TBHQ. While generally considered safe at typical consumption levels, some studies have explored potential health effects at very high doses, though evidence is mixed and not conclusive for typical dietary intake.