E321 is an additive approved by the EU (European Union). It is used as a synthetic antioxidant in food and drink products, especially in fatty food products in which it is sometimes included to reduce rancidity.
The common name for E321 is butylated hydroxytoluene or BHT.
BHT (E321) is less expensive than BHA (E320), and also less stable than BHA at high temperatures.
Excessive consumption of E321 has been said to cause liver damage and migraines. E321 has also been shown to cause cell division. The EU has restricted use of E321 to reduce the amount of this chemical in food and drink products.
Examples of food and drink products that may include E321:
- pastry products