E270 - Lactic acid
What it is and how it is used
Lactic Acid is an organic compound with the formula CH3CH-OH-CO2H. In the form of its conjugate base called lactate (this is thus different and kept as a separate ingredient). Lactic acid is chiral, consisting of two optical isomers. One is known as L--+--lactic acid or -S--lactic acid and the other, its mirror image, is D--−--lactic acid or -R--lactic acid in food the L-variant is used
Source
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