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.

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.

References in periodicals archive ?
Ademas, todas las cepas fueron positivas a citocromo oxidasa, indol, Voges-Proskauer, rojo de metilo y produccion de acido a partir de inositol.
Por otro lado, la cepa M1B presento las siguientes caracteristicas fenotipicas a 28 [grados]C: bacilo Gram negativo (24 horas en agar TSA), movil, citrato negativo, indol negativo, lisina descarboxilasa, arginina y ornitina dehidrolasa, sin produccion de [H.
Previous studies have reported that the genus Rhizobium synthetizes indol acetic acid from several tryptophan isomers (DL and L) (Perrine et al.
Suspected bacterial pathogens were then tube-tested using BIOQUIMICS test in Tse, Lia, Ornitin, Indol, and Simmon citrate, and incubated for 24 hr at 37 [degrees] C or tested using packed BIOQUIMICS.
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.
En las pruebas bioquimicas basicas para la especie Xanthomonas campestris, los 40 aislamientos reaccionaron positivamente a catalasa, movilidad, produccion de acido sulfhidrico e hidrolisis de la esculina; los mismos reaccionaron negativamente a oxidasa, produccion de indol y urea; presentaron metabolismo oxidativo en Hugh-Leifson (OF) y la reaccion de las cepas fue variable a hidrolisis del almidon, licuacion de la gelatina y utilizacion de citrato, todos crecieron a 36[grados]C y produjeron acido a partir de arabinosa, mannosa y glucosa.
coli strains showed variability by signs: maltose, sucarose and glucose fermentation, indol, protease, hemolytic and fibrinolytic activity formation as well as they were differed by antigen properties.
La reaccion en cadena responsable para el PUBS comienza con el triptofano de los alimentos que es metabolizado a indol en el intestino, luego es absorbido, pasa a la circulacion portal y convertido a sulfato de indoxyl en el higado y excretado en la orina.
Mediante la identificacion con el sistema rapido BBL CRYSTAL: prueba oxidasa e indol, se obtuvo un resultado presuntivo con el 90% de confiabilidad de: Xanthomonas spp.
coli Colonias rosadas, -- transparentes, de tamano medio con o sin halos alrededor Grupo KES * Colonias de tamano medio BBL Crystal E/NF, Indol y pigmento azul oscuro Grupo PMP ** Colonias beige o crema BBL Crystal E/NF, Indol redondeadas por halos marron Enterococcus Colonias verde azul de -- sp.
As colonias que apresentaram as caracteristicas para este microrganismo foram estocadas em Agar Infusao Cerebro e Coracao (BHI AGAR) e submetidas as provas bioquimicas [testes de producao de indol, vermelho de metila, Voges-Proskauer, citrato (IMViC), lactose, celobiose, adonitol, manitol e producao de gas a partir de glicose] e provas sorologicas.
As colonias suspeitas foram semeadas em tubos contendo Agar Triplice sugar iron e Agar Lisina; em seguida, foi realizada a serie bioquimica composta por teste de assimilacao de acucares (dulcitol, lactose, sacarose), indol, ureia, malonato, citrato, motilidade e gas sulfidrico, vermelho de metila/Vogues Proskauer.