butyric acid

butyric acid
An acid of unpleasant odor occurring in butter, cod liver oil, sweat, and many other substances. It exists in two forms: normal b. (also written as n-b.), butanoic acid, which occurs in combination with glycerol in cow's butter; and isobutyric acid, 2-methylpropanoic acid, one of the intermediates in valine catabolism, found in combination with glycerol in croton oil and elsewhere.

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butyric acid n either of two isomeric fatty acids C4H8O2:
a) a normal acid of unpleasant odor found in rancid butter and in perspiration
b) ISOBUTYRIC ACID

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bu·tyr·ic ac·id (bu-tērґik) 1. any four-carbon carboxylic acid, either n-butyric acid or isobutyric acid. 2. n-butyric acid, a saturated four-carbon fatty acid occurring in butter, particularly rancid butter, and in much animal fat. Systematic name: butanoic acid.

Medical dictionary. 2011.

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  • Butyric acid — Butyric Bu*tyr ic, a. (Chem.) Pertaining to, or derived from, butter. [1913 Webster] {Butyric acid}, {C3H7.CO2H}, an acid found in butter; an oily, limpid fluid, having the smell of rancid butter, and an acrid taste, with a sweetish aftertaste,… …   The Collaborative International Dictionary of English

  • butyric acid — n. a colorless, strong smelling isomeric fatty acid, CH3CH2CH2COOH, found in rancid butter, perspiration, etc. and used to produce fragrances and flavors …   English World dictionary

  • Butyric acid — Chembox new ImageFile =Butyric acid 2D skeletal.png ImageName = Skeletal structure ImageSize = 140 px ImageFile1 = Butyric acid flat structure.png ImageName1 = Flat structure ImageSize1 = 160 px ImageFile2 = Butyric acid 3D balls.png ImageName =… …   Wikipedia

  • butyric acid — Chem. either of two isomeric acids having the formula C4H8O2, esp. a rancid liquid occurring chiefly in spoiled butter, whose esters are used as flavorings. Also called butanoic acid. [1820 30] * * * ▪ chemical compound also called  butanoic… …   Universalium

  • butyric acid — noun a) Either of the two isomeric carboxylic acids, normal butyric acid and isobutyric acid, with the chemical formula CHCOOH, occurring in animal milk fat. b) Solely the straight chain isomer of the above, normal butyric acid or n butyric acid …   Wiktionary

  • butyric acid — sviesto rūgštis statusas T sritis chemija formulė H(CH₂)₃COOH atitikmenys: angl. butyric acid rus. масляная кислота ryšiai: sinonimas – butano rūgštis …   Chemijos terminų aiškinamasis žodynas

  • butyric acid fermentation — sviestarūgštis rūgimas statusas T sritis chemija apibrėžtis Anaerobinėmis sąlygomis vykstantis angliavandenių skilimas, kurio metu susidaro sviesto rūgštis. atitikmenys: angl. butyric acid fermentation rus. маслянокислое брожение …   Chemijos terminų aiškinamasis žodynas

  • butyric acid — [bju: tɪrɪk] noun Chemistry a syrupy liquid organic acid present in rancid butter and in arnica oil; butanoic acid. Origin C19: from L. butyrum (see butter) + ic …   English new terms dictionary

  • butyric acid — noun Date: 1826 either of two isomeric fatty acids C4H8O2; especially the straight chain acid of unpleasant odor normally found in perspiration and rancid butter …   New Collegiate Dictionary

  • butyric acid — (= CH3.CH2.CH2.COOH) Acid from which butyrate ion is derived. Smells of rancid butter, hence the name …   Dictionary of molecular biology

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