With TBHQ

TBHQ, or tert-Butylhydroquinone, is a synthetic antioxidant. It is produced through a chemical process involving the reaction of hydroquinone with tert-butyl alcohol.

TBHQ is added to foods to prevent fats and oils from spoiling, which helps extend shelf life. It is commonly found in high-fat foods like vegetable oils, animal fats, baked goods, and processed snacks.

In the U.S., TBHQ is permitted as a food additive. The FDA has evaluated TBHQ and considers it safe for consumption at levels up to 0.02% of the food's oil or fat content. International bodies like JECFA and EFSA have also evaluated TBHQ. Some studies have raised questions about potential health effects at very high doses, but regulatory bodies consider it safe at typical food usage levels.