E270 · INS 270Sometimes animal

Lactic acid

Common US / international name: lactic acid

Origin: Acidulant from lactic fermentation.
What it depends on: Name sounds dairy, but commercial food lactic acid is usually fermented from plant carbohydrates. Milk-derived grades are uncommon in EU food use.
Where it typically appears: Drinks, confectionery, dairy, savory sauces.
Product groups: Drinks, Sweets, Dairy, Savory
Source: EU Reg. No 1333/2008 Annex II; Codex CAC/GL 36-1989; Open Food Facts additives taxonomy (ODbL). As of September 1, 2026