malic acid


Definition of malic acid 

: a crystalline dicarboxylic acid C4H6O5 especially : the levorotatory isomer of malic acid that is found in various fruits (such as apples) and is formed as an intermediate in the Krebs cycle

Examples of malic acid in a Sentence

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Prism is a featherlight, essence-like elixir, made with all-natural fruit acids (malic acid from apple, salicylic acid from willow bark, glycolic acid from bilberry, vitamin C from kakadu plum, and orange peel) to gently exfoliate the skin. Sarah Kinonen, Allure, "Herbivore Botanicals' New Prism Exfoliating Glow Potion Is the Prettiest Serum of the Summer," 12 July 2018 The Far Niente also has a far higher level than the other wines of malic acid, which is found in lime juice, and there’s a reason for that. Bruce Schoenfeld, WIRED, "Your Next Glass of Wine Might Be a Fake—and You'll Love It," 30 May 2018 Everett is still making wine there, in a sense, doing things like adding malic acid to the Per Sempre blend to simulate the energy of the original. Bruce Schoenfeld, WIRED, "Your Next Glass of Wine Might Be a Fake—and You'll Love It," 30 May 2018 The mixture is natural (the active ingredients include sodium lauryl sulfate and malic acid) and comes in a stand-up jar. Lauren Piro, Good Housekeeping, "7 Genius Ways to Kill Fruit Flies," 7 May 2018 Cherries, apples and apricots are full of fruity malic acid, and the microbes in the kefir culture manufacture creamy lactic and bracing acetic acid. Ali Bouzari, San Francisco Chronicle, "Housemade: The silent science behind three signature dishes at Duna," 12 Apr. 2018 This is rich, ample California chardonnay, unadulterated by oak and made without the softening influence of malolactic fermentation, which turns firm malic acid into creamy lactic acid. Eric Asimov, New York Times, "20 Wines Under $20: Touring the World, Familiar to Obscure," 25 Jan. 2018 Fruit acids, including malic acid, lightly exfoliate skin, while olive oil, vitamin E, and jojoba oil offset any dryness. Ashley Weatherford, The Cut, "Your Guide to Madonna’s New Beauty Line, MDNA," 27 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'malic acid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of malic acid

1788, in the meaning defined above

History and Etymology for malic acid

French acide malique, ultimately from Latin malum apple, from Greek mēlon, malon

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The first known use of malic acid was in 1788

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malic acid


Medical Definition of malic acid 

: any of three optical isomers of a crystalline dicarboxylic acid C4H6O5 especially : the one found in various plant juices and formed as an intermediate in the Krebs cycle

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