E451

E451, also known as sodium polyphosphate, is a food additive widely used as a stabilizer, emulsifier, and preservative.

E451 is most commonly found in meat and fish products, cheeses, processed cheeses, sausages, canned goods, ice cream, and even some baked goods.

On a keto diet, it is recommended to minimize the consumption of products with the additive E451 due to the potential presence of hidden carbohydrates.