malic acid what is it
1. Malic acid is an organic substance typically found in fruits, responsible for their sweet-tart taste (in fact, itâs often used as an additive in sour candies). Itâs also synthesized by your body in a series of chemical reactions known as the Krebs cycle (or citric acid cycle).alic acid is an organic substance typically found in fruits, responsible for their sweet-tart taste (in fact, itâs often used as an additive in sour candies).