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.

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

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References in periodicals archive

As listed in Supplementary Table 2, the acetic acid yield and accumulative [H.sub.2] yield was 900.7mg/L and 51.6mL, respectively, indicating that the butyrate-oxidizing HPA presented good capacity in butyric acid degradation and provided sufficient substances for methane production.

Bioaugmentation with Mixed Hydrogen-Producing Acetogen Cultures Enhances Methane Production in Molasses Wastewater Treatment

The effects of both encapsulated butyric acid and microemulsified carotenoid diets on the growth parameters for the fishes throughout the experimental periods are given in Table 2.

Dietary Encapsulated Butyric Acid (Butipearl[TM]) and Microemulsified Carotenoids (Quantum GLO[TM] Y) on the Growth, Immune Parameters and their Synergistic Effect on Pigmentation of Hybrid Catfish (Clarias macrocephalus x Clarias gariepinus)

The growth of undesirable microorganisms like fungi and yeast decrease the aerobic stability of the silage that increases the protein degradation and thereby increase the butyric acid production.

Isolation, In Vitro Probiotic Characterization of Lactobacillus plantarum and its Role on Italian ryegrass Silage Quality Enhancement

The second method was based on the transesterification of triglycerides as pentyl esters of FAs, in which elongation of the alcohol chain produced heavier esters and increased the length of the ester of butyric acid to nine carbon atoms.

Rapid Analysis Procedures for Triglycerides and Fatty Acids as Pentyl and Phenethyl Esters for the Detection of Butter Adulteration Using Chromatographic Techniques

In this case, it is evident that the silages of grasses even without addition of Stylosanthes did not result in excessive breakdown of protein into ammonia, causing a lower activity of Clostridium bacteria and hence lower production of butyric acid.

Silage quality of Urochloa brizantha cultivars with levels of campo grande Stylosanthes/ Qualidade da silagem de cultivares de Urochloa brizantha com nfveis de Estilosantes campo grande

Honey can also contain acetic acid (the main acid in vinegar) or butyric acid. Butyric acid is found in some cheeses and is also the acid that causes the distinctive smell of human vomit.

Nectars in nature

Butyric acid is widely used as an animal feed supplement due to its ability to reduce pathogenic bacterial colonisation.

Amenability of carboxylic acids adsorption on surface of activated carbon

Despite a rise in ruminal butyric acid, acetate and propionate were not affected (P [greater than or equal to] 0.20), possibly reducing the likelihood of hydrogen capture and subsequent methane mitigation.

Effect of dry-rolled corn processing and distiller's grain inclusion rate on rumen pH, volatile fatty acids, ammonia concentration and in vitro methane production

Camel milk contains high levels of GABA (Gamma-Amino Butyric Acid), which is essential for helping the brain to function properly.

Desert Farms Camel Milk