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

Recent Examples on the Web Pipette Treat your skin to the rejuvenating benefits of lactic acid and malic acid with the Overnight Brightening Mask, which gently exfoliates dead skin cells to reveal a more radiant complexion. Emily Belfiore,, 30 Aug. 2021 The sharp malic acid of green apple will reveal any flaws in a wine, while the soft lactic acid of cheese will smooth rough edges and make a wine more appealing. Lettie Teague, WSJ, 23 June 2021 During the malolactic fermentation, the malic acid present in the wine is converted to lactic acid. Per And Britt Karlsson, Forbes, 21 June 2021 This clarifying gel-to-foam cleanser is packed with gentle exfoliators — grape ferment, grape extract, lactic acid, and malic acid — to bathe your skin in a frothy concoction that'll leave your skin refreshed, but not stripped. Sarah Han, Allure, 10 June 2021 Combined with malic acid this powerful duo exfoliate by interfering with how skin cells bond to hydrate, tone and brighten skin. Bryony Gilbey,, 20 Mar. 2021 The mixture uses the active ingredients sodium lauryl sulfate (a surfactant used in soaps) and malic acid (found in fruit) and comes in a stand-up jar. Lauren Piro, Good Housekeeping, 13 Jan. 2021 That’s when the wine’s malic acid (the same acid found in apples) converts to lactic acid (the same acid found in milk). Esther Mobley,, 27 Oct. 2017 The buttery taste that’s found in many Chardonnays is usually a result of malolactic fermentation, a process in which a wine’s tart malic acid is converted into creamy lactic acid. Esther Mobley,, 24 Apr. 2020

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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Time Traveler for malic acid

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The first known use of malic acid was in 1788

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Last Updated

5 Sep 2021

Cite this Entry

“Malic acid.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2021.

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More Definitions for malic acid

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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