E334: L(+)-tartaric acid
What is E334?
L(+)-tartaric acid, labelled E334, is a naturally occurring organic acid with a sharp, tart taste. It occurs in many fruits, particularly grapes and tamarind.
Origin and production
It is mostly obtained from by-products of winemaking, such as the crystalline deposits that form in wine barrels and the residues left after fermentation. It can also be produced synthetically.
Why is it used?
Tartaric acid adds sourness and regulates acidity in sweets, soft drinks, jams and jellies. It also binds metal ions and supports the action of antioxidants, and its salts form part of some baking powders.
Vegan, vegetarian and halal
Tartaric acid is plant-derived and suitable for vegans and vegetarians. Because it is commonly obtained from wine residues, some halal and kosher consumers look for certification.
Safety and regulation
L(+)-tartaric acid is authorised as a food additive in the EU and was re-evaluated by EFSA, which considered its use acceptable at the reported levels.
Written by the Foodlas editorial team with AI assistance and checked against EU Regulation (EC) No 1333/2008 and EFSA scientific opinions. Last reviewed: October 14, 2026.
Sources: Regulation (EC) No 1333/2008 · EFSA — Food additives · Wikidata
Common in
Products containing E334
