butyric acid

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Related to butyric acid: lactic acid

butyric acid

(byo͞otĭr`ĭk) or

butanoic acid

(byo͞otənō`ĭk), CH3CH2CH2CO2H, viscous, foul-smelling, liquid carboxylic acid; m.p. about −5°C;; b.p. 163.5°C;. It is miscible with water, ethanol, and ether. It is a low molecular weight fatty acidfatty acid,
any of the organic carboxylic acids present in fats and oils as esters of glycerol. Molecular weights of fatty acids vary over a wide range. The carbon skeleton of any fatty acid is unbranched. Some fatty acids are saturated, i.e.
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 that is present in butter as an ester of glycerol; the odor of rancid butter is due largely to the presence of free butyric acid. Butyric acid is used in the manufacture of plastics. Isobutyric acid, or 2-methylpropanoic acid, (CH3)2CHCO2H, is a geometric isomerisomer
, in chemistry, one of two or more compounds having the same molecular formula but different structures (arrangements of atoms in the molecule). Isomerism is the occurrence of such compounds. Isomerism was first recognized by J. J. Berzelius in 1827.
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 of the butyric acid described above; it has different physical properties but similar chemical properties.

Butyric Acid


a saturated monobasic carboxylic acid of the aliphatic series; a colorless liquid with a sharp, unpleasant odor, readily soluble in water and organic solvents.

Butyric acid has two known isomers: n-butyric acid, CH3CH2CH2COOH (boiling point, 163°C; density, 0.958 g/cm3 at 20°C); and isobutyric acid (CH3)2CHCOOH (boiling point, 155°C; density, 0.949 g/cm3 at 20°C). The first can be obtained by the oxidation of n-butanol or by the fermentation of waste products containing starch; the second, by the oxidation of isobutanol. Derivatives of n -butyric acid, or glycerides, are components of animal fats (for example, butter). Butyric acid esters, which have a fruity or floral odor, are of practical significance: certain types are used as aromatic principles in the perfume and food industries, and others as masticators in the preparation of varnishes.

butyric acid

[byü′tir·ik ′as·əd]
(organic chemistry)
CH3CH2CH2COOH A colorless, combustible liquid with boiling point 163.5°C (757 mmHg); soluble in water, alcohol, and ether; used in synthesis of flavors, in pharmaceuticals, and in emulsifying agents.
References in periodicals archive ?
Study on usage period of dietary protected butyric acid on performance, carass characteristics, serum metabolite levels and humoral immune response of broiler chickens.
Such compounds include sphingomyelin, conjugated linoleic acid, vitamin A, [beta]-carotene, vitamin D, calcium and butyric acid (23)
We need to find a way to eliminate the spore inside the silage that forms the butyric acid," Therrien says.
This top 10 is relative as nobody knows such smells as Butyric acid, which is a very concentrated bad odour found in parmesan cheese and smelly socks.
The receptors for brain chemicals such as glutamate, glycine, and gamma-amino butyric acid (GABA) drew particular attention because they control the flow of ions into nerve cells.
Butyric acid prevents the development of cancer cells and appears to protect against colon cancer.
Female ginkgo biloba trees produce an odor caused by butyric acid that forms when the fruit rots.
Butyric acid, a fatty acid found in clarified butter, has been known to have anti-viral and anti-cancer properties that promotes resistance to disease and increases the body's ability to heal injuries quickly.
Subjects of research presented this year included: the effect of muscadine grapefiber and wheatbran fiber on cecal butyric acid, fecal output, and weight gain in rats, phytoremediation of metal contaminated soil and sediments, reducing off-flavor in catfish and risk of Vibrio infection from raw oysters, performance of apple, pear, blueberries, yardlong bean, sweet potato, muscadine, cowpea and other plants under different environmental conditions in Mississippi, enhancing farm efficiency and profitability in selected MS counties, resolving relationships among Narcissus cultivars and other aspects of plant science research.
Police found GHB, or gamma hydroxy butyric acid, at the Tokyo company executive's condo and other places related to him, the sources said.
This defect is caused by the fermentation of lactate and the resulting production of gas and malodorous butyric acid.
Among the 10 components selected at the beginning of the study were the 9 acids named before and butyric acid.