noun[mass noun] Biochemistry
A colourless syrupy organic acid formed in sour milk, and produced in the muscle tissues during strenuous exercise.
- Scheele also discovered many of what we now call organic acids, for example lactic acid in sour milk and citric, malic, and tartaric acids in fruits.
- Without these enzymes, lactic acid and other organic acids build up in the body.
- The effect of this is too gradually calm down the muscles but also to help the removal of lactic acid from the muscle tissues.
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