E363, or formic acid, is a food additive widely used in the food industry. It has preservative properties and is often added to products to extend shelf life.
Despite its preservative properties, formic acid can be harmful to health, especially when consumed in large quantities. It can cause irritation of the gastrointestinal tract and have a negative impact on gut microbiota.
Formic acid is most commonly used in pickled vegetables, canned goods, juice drinks, and certain types of meat and fish.