Indole

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Related to Indol: tryptophan

indole

[′in‚dōl]
Also known as 2,3-benzopyrrole.
(biochemistry)
C6H4-(CHNH)CH A decomposition product of tryptophan formed in the intestine during putrefaction and by certain cultures of bacteria.
(organic chemistry)
Carcinogenic, white to yellowish scales with unpleasant aroma; soluble in alcohol, ether, hot water, and fixed oils; melt at 52°C; used as a chemical reagent and in perfumery and medicine.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Indole

 

(2, 3-benzopyrrole), colorless crystals with an unpleasant odor. Melting point, 52°C; boiling point, 254°C. It is soluble in hot water and organic solvents. Indole is present in coal tar, from which it is extracted as salts of alkali metals, as well as in certain essential oils (for example, oil of jasmine). Along with skatole (3-methyl-indole), it is found in the intestines of human beings and mammals.

Many indole derivatives, for example, 3-indoleacetic acid (heteroauxin A, a growth substance), serotonin, and reserpine, are biologically active. Indole is a raw material for synthesizing heteroauxin and tryptophane, and is used in the perfumery industry to improve and strengthen the scents of flower essences.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
CUADRO 1 Temperatura del horno en el cromatografo de gases TABLE 1 Oven temperature in the gas chromatograph Rampa Temperatura Isotermico ([grados]C/min) ([grados]C) (min) Inicial 0.0 35 2.00 1 10.0 85 0.00 2 20.0 110 1.00 CUADRO 2 Caracteristicas de las cepas en las pruebas para considerar como BPCV TABLE 2 Evaluation of strains in tests to be considered as BPCV No Cepa Acido indol Analisis de acetico (AIA) * acetileno * [micron]g/ml.
morganii morganii sibonii Cepa Biogrupos Biogrupos Caracteristicas bioquimicas aislada (A,B,C,D) (E,F,G) Produccion de indol + + + (triptofanasa) Rojo de metilo + + + Voges-Proskauer - - - Hidrolisis del citrato (medio - - - Citrato de Simmons) Ureasa + + + Fenilalanina desaminasa + + + Motilidad + 50 (c) + Hidrolisis de la gelatina - - - Utilizacion del malonato - 5 (b) - Reduccion de nitratos + + + Fermentacion de glucosa + + + Produccion de gas + + + Produccion de [H.sub.2]S - 15 (a) ; 25 (b) 22 (b) en agar TSI Fermentacion de la Lactosa - - - Fermentacion de la Maltosa - - - Fermentacion de la Trehalosa - - + (a,b,c,d,e,f,g) Solo en el % de los aislamientos del biogrupo correspondiente.
coli by biochemical tests, such as Indol (SIM, Merck 1.05470), Methyl red and Voges-Proskauer (MR-VP, Merck 1.05712,) and Citrate (Oxoid CM0155, Basingstoke).
The main indolic compound produced by bacteria is indol acetic acid (IAA), an active biological form of the auxins, which stimulates radical system growth (Dobbelaere et al., 2003; Vessey, 2003) and increases the uptake of the nutrients by the plant.
Caracteristicas fenotipicas.--La cepa J8A2 presenta las siguientes caracteristicas fenotipicas a 28 [grados]C: bacilo corto Gram negativo (24 horas en agar TSA), motil, utiliza citrato como unica fuente carbono, no hidroliza almidon, produccion de indol negativo, sin produccion de [H.sub.2]S, fermentacion de glucosa con produccion de acidez y gas, crecimiento en anaerobiosis, crecimiento en NaCl al 7%, rojo de metilo positivo y Voges-Proskauer negativo.
Yapilan bir arastirmada hiperkalsemiye bagli psikiyatrik belirtiler sergileyen hastalarda beyin omurilik sivisinda serotonin metaboliti olan 5-HIAA (5 hidroksi indol asetik asit), dopaminin metaboliti olan HVA (homovanilik asit) ve noradrenalin metaboliti olan MPHG (3 metoksi 4 hidroksi fenilglikol) duzeylerinde azalma oldugu, ameliyattan 1 ay sonra normal sinirlara geldigi bulunmustur (9).
Los reguladores de crecimiento anadidos al medio varian en los distintos ciclos, [1.sup.er] ciclo: 0,5 mg/l de acido indol acetico (AIA) y 0,2 mg/l de benciladenina (BA), 2[grados] ciclo: 0,5 mg/l de AIA y 0,1 mg/l de BA; [3.sup.er] ciclo: 0,5 mg/l de AIA, 0,1 mg/l de BA y 0,5 mg/l de zeatina (medio basico) (San Jose et al., 2010).