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Typical source

Fermentation of plant sugars

Plain-language explanation

E270, or lactic acid, is a natural preservative and flavoring agent found in sour milk, tomatoes, and other fermented foods. It can be produced through bacterial fermentation of carbohydrates like sugar or starch, which is generally considered halal. However, lactic acid can also be chemically synthesized, and if the starting material is non-halal, the final product may not be halal. Therefore, its halal status depends on the source and manufacturing process, requiring halal certification to be certain.