malic acid definition

  • noun:
    • A colorless, crystalline ingredient, COOH·CH2·CHOH·COOH, that occurs normally in a multitude of unripe fresh fruit, including oranges, cherries, and tomatoes, and is used as a flavoring and in the aging of wine.
    • A colourless crystalline dicarboxylic acid, hydroxy-malonic acid, present wine, oranges as well as other good fresh fruit; it's changed into lactic acid by malo-lactic fermentation.
  • adjective:
    • a hydroxy acid (HO.CO.CH2.CH(OH).CO.OH) received from unripe fruit (including green apples, currants, tomatoes or cherries) as a substance which will be sirupy or crystallized with trouble, and has now a solid but pleasant sour flavor. It really is levorotatory or dextrorotatory in line with the heat and concentration; the all-natural form is of L- conformation. A synthetic variety is a derivative of succinic acid, but just like easiest artificial compounds, is a racemic combination of isomers and so does not have any rotatory activity on polarized light.

Related Sources

  • Definition for "malic acid"
    • A colorless, crystalline ingredient, COOH·CH2·CHOH·COOH, that occurs normally…
    • View More
  • Synonym for "malic acid"
54 votes

How would you define malic acid?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!