isovaleric acid


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i·so·va·ler·ic ac·id

(ī'so-vă-ler'ik as'id, -lēr'ik),
3-Methylbutyric acid; a metabolic intermediate in oxidative processes; elevated in cases of isovaleric acidemia.
References in periodicals archive ?
Rudi, "Isovaleric acid in stool correlates with human depression," Nutritional Neuroscience, vol.
Retention Relative Metabolite time (min) Compound abundance (%) 1 5.39 Ethyl acetate 79.1 2 5.5 Isobutyl alcohol 2.0 3 7.21 Isopentyl alcohol 5.7 4 7.3 2-Methyl-butanol 1.9 5 7.72 Isobutyric acid 0.6 6 9.57 Isovaleric acid 0.8 7 10.16 2-Methyl butyric acid 0.5 8 17.59 2-phenyl ethanol 4.5 9 33.38 2,5,5-Trimethyl-l, 1.3 3-cyclohexane dione 10 35.03 2,6-Dimethoxyphenol 1.4 11 36.08 2-phenyl ethyl acetate 0.4 12 37.44 3-Hy droxy-2-butanone 1.7
[3] H.D Aliyu and Nwabueze (2007) synthesis and solution studies of coppor (11) valeric and isovaleric acid hydrazide in aqueous, medium J.chen.
Chemical Parameters of Valeriana Colchica Utk N composition % 1 extract substances 26.90 2 essential oils 1.04 3 Isovaleric acid 0.95
This enzyme catalyzes the conversion of isovalery-CoA to 3-methylcrotonyl-CoA, and a deficiency of this enzyme results in toxic accumulation of isovaleric acid and derivative organic acids.
The typical constituents of valerian roots are found to be valeric and isovaleric acid, monoterpenes ([alpha]-pinene, [alpha]-fenchene, camphene), monoterpenic esters (bornyl acetate, myrtenyl acetate, myrtenyl isovaleriate), oxygen containing sesquiterpenes, and valerian cyclopentanoid sesquiterpenes such as valerenal, valerenone, valerenol, valerenyl acetate, valerenic acid, and valerenyl isovalerate.
Prior studies by others had awarded that distinction to steroids and isovaleric acid. To push his point at the American Chemical Society meeting.
The production of isovaleric acid is occasionally observed, causing the strong odor.
Characterizing the antifungal effects of isovaleric acid. Austin Peay State University, Clarksville, Tennessee.
When leucine is not used properly, it builds up as isovaleric acid and other harmful substances in the blood and urine that are toxic or poisonous.
Isovaleric acid gets credit for the rancid and horsy elements.
Silage (moisture) High density Low High Low Measurement ([dagger]) density density density 587 g [kg.sup.-1] 524 g [kg.sup.-1] PH 4.7 b 4.9 ab 4.8 b 5.1 a ([double dagger]) Lactic acid 70.0 a 64.6 a 71.4 a 62.8 a Acetic acid 23.9 ab 38.0 a 32.6 a 19.9 b Propionic acid 1.73 a 0.77 b 0.41 b 0.67 b Isobutyric acid 1.14 b 7.01 a 1.82 b 2.99 b Butyric acid -([section]) 0.40 a 0.20 a 0.54 a Isovaleric acid 0.02 a 0.20 a -- -- Valeric acid 0.34 a 0.27 a 0.56 a 0.40 a ([dagger]) High density baled at 358 kg [cm.sup.-2] hydraulic pressure, low density baled at 179 kg [cm.sup.-2] hydraulic pressure.