formulation - a substance prepared according to a formula; the physician prescribed a commercial preparation of the medicine. preparation. cleaner, cleanser, cleansing agent - a preparation used in cleaning something.
A food additive is any chemical substance that is added to food during preparation or storage and either becomes a part of the food or affects its characteristics for the purpose of achieving a particular technical effect.
Indirect food additives are those that become part of the food in trace amounts due to its packaging, storage or other handling. For instance, minute amounts of packaging substances may find their way into foods during storage.