Base de dados : LILACS
Pesquisa : D02.309.750.500 [Categoria DeCS]
Referências encontradas : 2 [refinar]
Mostrando: 1 .. 2   no formato [Detalhado]

página 1 de 1

  1 / 2 LILACS  
              next record last record
para imprimir
Id: lil-331802
Autor: Englebienne, P; López, M. G; Cortón, E; Viale, A. A.
Título: Use of a CO2 electrode to monitor fermentations that use xenobiotic compounds as source of carbon
Fonte: Rev. argent. microbiol;34(2):72-76, abr.-jun. 2002.
Idioma: en.
Resumo: Bacterial strains were isolated from contaminated waters, mud or soils. They are capable of growing in mineral medium with different chemicals as carbon source, such as aliphatic or aromatic hydrocarbons and polychlorinated biphenyls (PCBs). Most of these strains tolerate high concentrations (up to 30 v/v) of the xenobiotic substrates. This is particularly important for the development of fermenting processes to treat effluents or residues with a high content of contaminating compounds. An ion-specific potentiometric electrode (CO2) has been developed to measure CO2 production continuously. When the different strains were incubated in a mineral medium and in the presence of the corresponding substrate, a parallel between growth, substrate consumption and CO2 production was found. The developed system is suggested as an efficient and economical alternative to evaluate the potential of biodegradation by different microorganisms.
Descritores: Alcaligenes
Dióxido de Carbono/análise
Pseudomonas aeruginosa
Biodegradação Ambiental
Dióxido de Carbono/metabolismo
Poluentes Ambientais
Desenho de Equipamento
Pseudomonas aeruginosa
Microbiologia do Solo
Microbiologia da Água
Poluição Química da Água
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME

  2 / 2 LILACS  
              first record previous record
para imprimir
Id: lil-331789
Autor: Haglund, C; Levín, L; Forchiassin, F; López, M; Viale, A.
Título: Degradation of environmental pollutants by Trametes trogii
Fonte: Rev. argent. microbiol;34(3):157-162, jul.-sept. 2002.
Idioma: en.
Resumo: The ability of the ligninolytic fungus Trametes trogii to degrade in vitro different xenobiotics (PCBs, PAHs and dyes) was evaluated. Either 200 ppm of a PCB mixture (Aroclor 1150) or 160 ppm of an industrial PAH mixture (10 V/V of PAHs, principal components hexaethylbenzene, naphthalene, 1-methyl naphthalene, acenaphthylene, anthracene, fluorene and phenanthrene), were added to trophophasic and idiophasic cultures growing in a nitrogen limited mineral medium (glucose/asparagine) and in a complex medium (malt extract/glucose). Gas-liquid chromatography proved that within 7 to 12 d more than 90 of the organopollutants added were removed. The decrease in absorbance at 620 nm demonstrated that cultures of this fungus were able to transform 80 of the dye Anthraquinone-blue (added at a concentration of 50 ppm) in 1.5 h. Enzyme estimations indicated high activity of laccase (up to 0.55 U/mL), as well as lower production of manganese-peroxidase. Laccase activity, detected in all the conditions assayed, could be implicated in the degradation of these organopollutants. Considering the results obtained, T. trogii seems promising for detoxification.
Descritores: Biodegradação Ambiental
Poluentes do Solo
Indústria Química
Cromatografia Gasosa-Espectrometria de Massas
Hidrocarbonetos Aromáticos/metabolismo
Resíduos Industriais
Bifenilos Policlorados
Proteínas Fúngicas/metabolismo
Tipo de Publ: Estudo Comparativo
Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME

página 1 de 1

Refinar a pesquisa
  Base de dados : Formulário avançado   

    Pesquisar no campo  

Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde