Malic acid

Malic acid
Malic Ma"lic, a. [L. malum an apple: cf. F. malique.] (Chem.) Pertaining to, or obtained from, apples; as, malic acid. [1913 Webster]

{Malic acid}, (Chem.) a hydroxy acid ({HO.CO.CH2.CH(OH).CO.OH}) obtained from unripe fruit (such as green apples, currants, tomatoes or cherries) as a substance which is sirupy or crystallized with difficulty, and has a strong but pleasant sour taste. It is levorotatory or dextrorotatory according to the temperature and concentration; the natural form is of L- conformation. A synthetic variety is a derivative of succinic acid, but as with most simple synthetic compounds, is a racemic mixture of isomers and thus has no rotatory action on polarized light. [1913 Webster +PJC]

The Collaborative International Dictionary of English. 2000.

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  • malic acid — [mal′ik, mā′lik] n. [Fr acide malique < L malum < Gr mēlon, apple] a crystalline acid, COOHCH2CH(OH)COOH, occurring in apples and other fruits …   English World dictionary

  • Malic acid — Not to be confused with maleic acid or malonic acid. Malate redirects here. For the district in Manila, see Malate, Manila. Malic acid …   Wikipedia

  • malic acid — Hydroxysuccinic acid; an acid found in apples and various other tart fruits; an intermediate in the tricarboxylic acid cycle, the glyoxylate cycle, and in a shuttle system. SYN: monohydroxysuccinic acid. * * * malic acid n any of three optical… …   Medical dictionary

  • malic acid — noun Etymology: French acide malique, ultimately from Latin malum apple, from Greek mēlon, malon Date: 1790 a crystalline dicarboxylic acid C4H6O5; especially the levorotatory isomer of malic acid that is found in various fruits (as apples) and… …   New Collegiate Dictionary

  • malic acid — obuolių rūgštis statusas T sritis chemija formulė HOOCCH(OH)CH₂COOH atitikmenys: angl. malic acid rus. яблочная кислота ryšiai: sinonimas – hidroksibutano dirūgštis …   Chemijos terminų aiškinamasis žodynas

  • malic acid — [ malɪk] noun Chemistry a crystalline acid present in unripe apples and other fruits. Origin C18: malic from Fr. malique, from L. malum apple …   English new terms dictionary

  • malic acid — noun A colourless crystalline dicarboxylic acid, hydroxy malonic acid, found in wine, apples and other fruit; it is converted to lactic acid by malo lactic fermentation. Syn: E296, acidity regulator …   Wiktionary

  • malic acid — /mælɪk ˈæsəd/ (say malik asuhd) noun a crystalline, dibasic hydroxy acid, C2H3OH(COOH)2, occurring in small amounts in almost all living cells as a component of the citric acid cycle, and in greater amounts in apples, grapes, and other fruits …  

  • malic acid — n. acid in fruits (such as in apples and tomatoes) …   English contemporary dictionary

  • malic acid — n. an organic acid found in unripe apples and other fruits. Etymology: F malique f. L malum apple …   Useful english dictionary

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