Food additives can be antioxidant, coloring, flavor enhancers, sweeteners, emulsifiers, stabilizers and preservatives.
All these additives are assessed for safety before they are allowed to be used. Approved additives are given a number and some are given an E if they are accepted for safe within the E.U.
Benefits of Additives:
Additives to think twice about!
How to avoid unhealthy additives