TBHQ And Citric Acid Added As Preservative

TBHQ (tertiary butylhydroquinone) is a synthetic antioxidant. It is a white or slightly colored crystalline powder. Citric acid is a weak organic acid found naturally in citrus fruits, but for food use, it is typically produced industrially through fermentation.

TBHQ and citric acid are often used together as preservatives in foods containing oils and fats. They prevent oxidation, which can cause spoilage and off-flavors. They are commonly found in processed foods like frozen appetizers, snacks, and baked goods to extend shelf life.

TBHQ is approved by the FDA as a food additive and is generally recognized as safe (GRAS) when used within specified limits. Studies in animals have looked at high doses, but at typical dietary levels, it is not associated with adverse health effects. JECFA and EFSA have evaluated TBHQ. Citric acid is also FDA GRAS and is widely consumed in foods and beverages.