Polychlorinated Biphenyl
Mostrando 1-12 de 117 artigos, teses e dissertações.
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1. Regional analysis of potential polychlorinated biphenyl degrading bacterial strains from China
ABSTRACT Polychlorinated biphenyls (PCBs), the chlorinated derivatives of biphenyl, are one of the most prevalent, highly toxic and persistent groups of contaminants in the environment. The objective of this study was to investigate the biodegradation of PCBs in northeastern (Heilongjiang Province), northern (Shanxi Province) and eastern China (Shanghai muni
Braz. J. Microbiol.. Publicado em: 2016-09
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2. Polychlorinated Biphenyl (PCB) congener concentrations in aquatic birds. Case study: Ilha Grande Bay, Rio de Janeiro, Brazil
Fígados de 108 pássaros encontrados prostrados ou mortos na Baía da Ilha Grande entre 2005 e 2010 foram analisados para 16 congêneres de PCB (IUPAC números 8, 18, 28, 31, 52, 77, 101, 118, 126, 128, 138, 149, 153, 169, 170 e 180). As espécies analisadas foram Egretta caerulea (Linnaeus 1758), Nycticorax nycticorax (Linnaeus 1758), Egretta thula (Molina
An. Acad. Bras. Ciênc.. Publicado em: 2013
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3. Degradação de bifenila policlorada e caracterização da comunidade microbiana de reator anaeróbio com biofilme / Studies on the biodegradation and degradation of polychlorinated biphenyl in anaerobious conditions
Métodos de Microbiologia de anaeróbios estritos e de Biologia Molecular foram empregados para se conhecer a diversidade de microrganismos relacionados à degradação de ascarel em reatores anaeróbios metanogênicos. A avaliação de potencial metanogênico foi realizada para a escolha da melhor condição nutricional, bem como, para a seleção de materi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2011
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4. RESÍDUOS DE BIFENILOS POLICLORADOS EM ARROZ E FEIJÃO DO ESTADO DO RIO GRANDE DO SUL / RESIDUES OF POLYCHLORINATED BIPHENYL IN RICE AND BEANS IN THE STATE OF RIO GRANDE DO SUL
Polychlorinated biphenyls (PCBs) were commercially produced between 1929 and the mid 1980s with industrial purposes. The same properties that interested industrially, as chemical inertness, high dielectric constant, resistance to burning; were also responsible for the spreading of the PCBs in all of the environmental compartments, mainly due to the inadequat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2011
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5. DEGRADAÇÃO DE BIFENILOS POLICLORADOS (PCBs) POR MICRORGANISMO DE INTERESSE TECNOLÓGICO NA INDÚSTRIA CÁRNEA / DEGRADATION OF POLYCHLORINATED BIPHENYLS (PCBs) BY MICROORGANISM OF TECHNOLOGICAL INTEREST IN MEAT INDUSTRY
Due to the risk for human health associated to the presence of polychlorinated biphenyl (PCB) residues in foods, there is an interest in knowing the different factors that could reduce such contamination. Previous research has demonstrated that food processing modifies both qualitative and quantitatively, the organochlorine contamination, specially PCBs, of
Publicado em: 2005
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6. Crescimento e sobrevivência do recombinante Rhodococcus sp. isolado RHA1 (fcb) em turfa comercial e solo contaminado com PCB / Growth and survival of recombinant Rhodococcus sp. isolate RHA1 (fcb) in commercial peat and in PCB contaminated soil
The group of organochlorates Biphenyl Polychlorates (PCBs) is of difficult degradation and persistent in the environment, being associated to several problems in the organisms due to its toxicological potential. The isolate RHA1 (fcb) from Rhodococcus sp. was genetically built with the introduction of the operon of hydrolytic degradation 4-chlorobenzoate (fc
Publicado em: 2005
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7. "Caracterização polifásica da biodiversidade de isolados degradadores de poluentes xenobióticos na baixada santista" / "Polyphasic characterization of xenobiotic-degrading bacteria diversity in Santos estuary"
Recalcitrant compounds such as polychlorinated biphenyls (PCBs) and hydrocarbons have attracted researchers attention all over the world, because of their persistence and side effects to the environment and to the humanity. The knowledge of genotypic an phenotypic biodiversity of xenobiotic compound degrading-microorganisms is extremely important for the c
Publicado em: 2002
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8. Subculturing of a polychlorinated biphenyl-dechlorinating anaerobic enrichment on solid media.
An anaerobic culture capable of dechlorinating polychlorinated biphenyls was subcultured under strict anaerobic conditions on solid media containing sterilized river sediment. The dechlorination activity was transferred as a bacterial colony on a solid medium three times. After two transfers on solid medium, the culture was no longer methanogenic but still d
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9. Tenax-GC Extraction Technique for Residual Polychlorinated Biphenyl and Polyaromatic Hydrocarbon Analysis in Biodegradation Assays
A rapid Tenax-GC extraction technique has been evaluated for use in conjunction with aqueous biodegradation assays for polyaromatic hydrocarbons and polychlorinated biphenyls. The method was quantitatively efficient and reproducible for phenanthrene, but variable and not quantitative for Aroclor 1254 (polychlorinated biphenyls). Aqueous sample volumes and va
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10. Effect of Polychlorinated Biphenyl Formulations on the Growth of Estuarine Bacteria1
Polychlorinated biphenyl formulations inhibited the growth of certain estuarine bacteria. The sensitive strains, although exhibiting some similar physiological characteristics, contained both gram-positive and gram-negative bacteria.
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11. Pseudomonas putida KF715 bphABCD operon encoding biphenyl and polychlorinated biphenyl degradation: cloning, analysis, and expression in soil bacteria.
We cloned the entire bphABCD genes encoding degradation of biphenyl and polychlorinated biphenyls to benzoate and chlorobenzoates from the chromosomal DNA of Pseudomonas putida KF715. The nucleotide sequence revealed two open reading frames corresponding to the bphC gene encoding 2,3-dihydroxybiphenyl dioxygenase and the bphD gene encoding 2-hydroxy-6-oxo-6-
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12. Degradation of polychlorinated biphenyls by mixed microbial cultures.
Three different enriched mixed cultures capable of degrading polychlorinated biphenylas were isolated from two soil samples and a river sediment, respectively. The predominant organisms found in all three mixed cultures were Alcaligenes odorans, Alcaligenes dentrificans, and an unidentified bacterium. The polychlorinated biphenyl isomers that were more water