butyric acid


Also found in: Dictionary, Thesaurus, Medical, Legal, Wikipedia.
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.
..... Click the link for more information.
 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.
..... Click the link for more information.
 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 ?
The concentration of butyric acids in the rumen fluids of lambs in T1 and T2 was very high compared with other groups which may support the previous hypothesis related the high glucose levels of these groups since propionate levels were low.
This can also be attributed to the slurry pH and the proportion of volatile fatty acid production which can either favour methane production if more acetic and butyric acid are produced or reduce its production when more of propionic acid was formed.
In conclusion, the corn oil and sucralphate treatments did not lead to differences in the concentration of acetic acid and butyric acid in this study.
The objective of the present study was to investigate the adsorption behaviours by use of activated carbon (AC) for the removal of benzoic acid (BA), valeric acid (VA), butyric acid (BUA) and propionic acid (PA) from aqueous solutions by changing their initial concentration.
In connection with superiority of treatment of Indole butyric acid (IBA) with concentration of 2000 and 3000 mg/L compared to some mixed treatments observed in some cuttings of the Azalea alexander L.
They found that a chemical, 4-phenyl butyric acid, that relieves this stress, prevents die cells from failing, suggesting a potential target for clinical intervention.
Various auxins such as Indole Acetic Acid (IAA), Indole Butyric Acid (IBA), Naphthalene Acetic Acid (NAA) and 2,4- Dichloropheoxy Acetic Acid (2,4-D) have been reported to promote rooting in cuttings of the most of the plant species.
Taurine, a partial agonist at inhibitory glycine and [gamma]-amino butyric acid receptors, was added to the daily diet of rats to examine its effects on chronic tinnitus and normal auditory discrimination.
gingivalis produces a fatty acid called butyric acid, which may induce reactivation of the latent HIV-1 virus.
Abbreviations: BA-6Benzyladenine, IAA-Indole 3 acetic acid, IBA-Indole 3 butyric acid, PVP-Polyvinylpyrrolidone