Origin
Calcium tartrate is like all other tartrates also a natural substance that is not only a main component of cream of tartar but also occurs in many fruit varieties. For industrial use, E 354 is produced by combining potassium bitartrate with calcium oxide. From the reaction of both substances with each other, calcium tartrate is formed, which is an odorless and colorless solid that is not soluble in water.
Usage
The same approval conditions apply to E 354 as for tartaric acid, which is listed as a food additive under the designation E 334. Calcium tartrate is subject to no restrictions and is generally approved for foods. E 354 is used in the following foods: fruit juices, desserts, sweets, jellies, jams, aspic, preserves, canned fruits and vegetables, effervescent powders, and refreshing drinks. In addition to being an acidity regulator, E 354 is also used as an antioxidant and leavening agent.
Risks
The food additive E 354 can be classified as completely harmless. Foods to which calcium tartrate has been added as a substance can be consumed without concern.