TBHQ
A synthetic antioxidant that stops oils from going rancid. Permitted within limits, but common in heavily processed, oil-rich foods.
Tertiary butylhydroquinone (TBHQ) is a synthetic antioxidant added to oils and fried foods to slow rancidity and extend shelf life.
What the research says
Regulators consider it safe within set limits. Some animal studies at high doses have raised questions, and research on possible immune effects is ongoing. The CleanPlate method applies a small penalty when it is present.
Where you will find it
Instant noodles, fried snacks, namkeen, biscuits and refined cooking oils.
CleanPlate verdict
Not an emergency, but a clear sign of a product engineered for a long shelf life rather than freshness.
Found in
Products we've rated that list TBHQ, best first.
Related additives
Full index →Hydrogenated Vegetable Oil
Vegetable oil hardened by hydrogenation. Labels rarely say whether it is partially hydrogenated (trans fat) or fully hydrogenated (saturated fat).
In 4 rated products →Tartrazine
A synthetic lemon-yellow azo dye and one of the Southampton Six. The EU requires a hyperactivity warning on every product containing it. India does not.
In 3 rated products →Carmoisine
A synthetic red azo dye (also called azorubine) and one of the Southampton Six. It is not approved for food use in the United States.
In 2 rated products →