Degrader Microorganisms
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Rhizospheric microorganisms and arbuscular mycorrhiza in soil from a petrochemical waste landfarming system. / Microbiota RizosfÃrica e Micorriza Arbuscular em Solo de "Landfarming" de ResÃduos PetroquÃmicos.
In the petroleum industrialization a great volume of different toxic residues is generated. Because of these waste environmental hazards they need to be adequately treated before final disposition in the environment. These wastes are usually treated by landfarming systems, but this technique has only relative success, since it doesn t completely remove all c
Publicado em: 2007
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2. A Small-Scale Method for Screening of Lignin-Degrading Microorganisms
A new method to facilitate rapid screening of lignin-degrading microorganisms was developed. Fungal strains are cultivated in tissue culture plates containing 14C-ring-labeled dehydrogenation polymerizate (DHP) (synthetic lignin). Evolved 14CO2 is trapped in barium-saturated filter paper and is detected by exposing the paper to X-ray film. Analysis of the au
American Society for Microbiology.
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3. Microbial Degradation of Lignocellulose: the Lignin Component
A new procedure was developed for the study of lignin biodegradation by pure or mixed cultures of microorganisms. Natural lignocelluloses were prepared containing 14C in primarily their lignin components by feeding plants l-[U-14C]phenylalanine through their cut stems. Lignin degradation was observed in numerous soils by monitoring evolution of 14CO2 from [1
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4. Biodegradation of Pentachlorophenol in a Continuous Anaerobic Reactor Augmented with Desulfitobacterium frappieri PCP-1†
In this work, a strain of anaerobic pentachlorophenol (PCP) degrader, Desulfitobacterium frappieri PCP-1, was used to augment a mixed bacterial community of an anaerobic upflow sludge bed reactor degrading PCP. To estimate the efficiency of augmentation, the population of PCP-1 in the reactor was enumerated by a competitive PCR technique. The PCP-1 strain ap
American Society for Microbiology.
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5. Dual-Bioaugmentation Strategy To Enhance Remediation of Cocontaminated Soil
Although metals are thought to inhibit the ability of microorganisms to degrade organic pollutants, several microbial mechanisms of resistance to metal are known to exist. This study examined the potential of cadmium-resistant microorganisms to reduce soluble cadmium levels to enhance degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) under conditions of
American Society for Microbiology.
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6. Effects of Soil pH on the Biodegradation of Chlorpyrifos and Isolation of a Chlorpyrifos-Degrading Bacterium
We examined the role of microorganisms in the degradation of the organophosphate insecticide chlorpyrifos in soils from the United Kingdom and Australia. The kinetics of degradation in five United Kingdom soils varying in pH from 4.7 to 8.4 suggested that dissipation of chlorpyrifos was mediated by the cometabolic activities of the soil microorganisms. Repea
American Society for Microbiology.
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7. Mycobacterium Diversity and Pyrene Mineralization in Petroleum-Contaminated Soils
Degradative strains of fast-growing Mycobacterium spp. are commonly isolated from polycyclic aromatic hydrocarbon (PAH)-contaminated soils. Little is known, however, about the ecology and diversity of indigenous populations of these fast-growing mycobacteria in contaminated environments. In the present study 16S rRNA genes were PCR amplified using Mycobacter
American Society for Microbiology.
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8. Activity and Diversity of Methanogens in a Petroleum Hydrocarbon-Contaminated Aquifer
Methanogenic activity was investigated in a petroleum hydrocarbon-contaminated aquifer by using a series of four push-pull tests with acetate, formate, H2 plus CO2, or methanol to target different groups of methanogenic Archaea. Furthermore, the community composition of methanogens in water and aquifer material was explored by molecular analyses, i.e., fluor
American Society for Microbiology.
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9. Influence of antibiotics on intestinal tract survival and translocation of environmental Pseudomonas species.
The environmental release of microorganisms has prompted the investigation of potential health effects associated with their release. In this study, survival and translocation to the spleen and liver of several environmental Pseudomonas spp. were investigated in antibiotic-treated mice. Pseudomonas aeruginosa BC16 and P. maltophilia BC6, isolated from a comm