Help us make food transparency the norm!

As a non-profit organization, we depend on your donations to continue informing consumers around the world about what they eat.

The food revolution starts with you !


E354 - Calcium tartrate

Calcium tartrate, exactly calcium L-tartrate, is a byproduct of the wine industry, prepared from wine fermentation dregs. It is the calcium salt of L-tartaric acid, an acid most commonly found in grapes. Its solubility decreases with lower temperature, which results in the forming of whitish -in red wine often reddish- crystalline clusters as it precipitates. It finds use as a food preservative and acidity regulator. Like tartaric acid, calcium tartrate has two asymmetric carbons, hence it has two chiral isomers and a non-chiral isomer -meso-form-. Most calcium tartrate of biological origin is the chiral levorotatory -–- isomer. - Wikipedia