Autochthonous Microorganisms
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Epicoccum nigrum and Cladosporium sp. for the treatment of oily effluent in an air-lift reactor
The metalworking industry is responsible for one of the most complex and difficult to handle oily effluents. These effluents consist of cutting fluids, which provide refrigeration and purification of metallic pieces in the machining system. When these effluents are biologically treated, is important to do this with autochthonous microorganisms; the use of th
Braz. J. Microbiol.. Publicado em: 2013
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2. Isolation and selection of microorganisms for the oily effluent remediation of the metalworking industry / Isolamento e seleção de microrganismos para remediação de efluente oleoso da indústria metal-mecânica
A indústria metal-mecânica é responsável pela síntese de um dos efluentes oleosos mais complexos e difíceis de tratamento e reuso. Esses efluentes são constituídos, entre outros poluentes, por fluidos de corte, que servem para refrigerar e lubrificar peças metálicas no sistema de usinagem. Quando esses efluentes são tratados biologicamente é impo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/09/2009
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3. "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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4. Microcultural Study of Bacterial Size Changes and Microcolony and Ultramicrocolony Formation by Heterotrophic Bacteria in Seawater †
With a microculture technique and time-lapse, phase-contrast photomicrography, it was possible to follow the division of individual cells and the development of microcolonies of bacteria in freshly collected marine water samples. A certain number of marine bacteria, upon inoculation onto a nutrient rich agar surface, displayed an increase in size as well as
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5. Contamination of broiler carcass skin during commercial processing procedures: an electron microscopic study.
Scanning and transmission electron microscopy were used in conjunction with normal microbiological cultural techniques to examine some aspects of contamination of broiler carcass skin by bacteria during processing. The autochthonous skin microflora of poultry, before processing, was mainly Micrococcus spp. which were located in accumulations of sebum-like su
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6. Influence of decontamination on induction of arthritis in Lewis rats by cell wall fragments of Eubacterium aerofaciens. Arthropathic properties of indigenous anaerobic bacteria.
Although the cause (or causes) of rheumatoid arthritis is unknown, many workers have suggested that microorganisms play a part. The intestinal flora in particular has been related to the development of joint inflammation. It has been shown previously that cell wall fragments of several anaerobic Gram positive intestinal bacteria of human origin are arthritog
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7. Metabolic efficiency and turnover of soil microbial communities in biodegradation tests.
Biodegradability screening tests of soil commonly measure 14CO2 evolution from radiolabeled test compounds, and glucose has often served as a positive control. When constant amounts of radiolabel were added to soil in combination with increasing amounts of unlabeled substrates, glucose and some related hexoses behaved in an anomalous manner. In contrast to t
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8. Survival of Escherichia coli and Salmonella spp. in estuarine environments.
Survival of Escherichia coli and Salmonella spp. in estuarine waters was compared over a variety of seasonal temperatures during in situ exposure in diffusion chambers. Sublethal stress was measured by both selective-versus-resuscitative enumeration procedures and an electrochemical detection method. E. coli and Salmonella spp. test suspensions, prepared to
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9. Hexadecane mineralization in oxygen-controlled sediment-seawater cultivations with autochthonous microorganisms.
Laboratory studies investigated the influence of dissolved oxygen tension (DOT) on microbial degradation of hexadecane in cultures with sediment-seawater suspensions. With a fermentor system, it was possible to adjust and regulate different oxic conditions (DOTs between 0.4 and 80% of oxygen saturation) as well as anoxia. The effects of DOT reduction on the
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10. Expression of Chlorocatechol 1,2-Dioxygenase and Chlorocatechol 2,3-Dioxygenase Genes in Chlorobenzene-Contaminated Subsurface Samples
In order to evaluate the in situ degradative capabilities of microorganisms in an underground reactor facility housing two flowthrough columns filled with aquifer soil, we examined the distribution and phylogeny of gene transcripts encoding enzymes capable of catalyzing the cleavage of the chlorinated aromatic ring during transformation of the main pollutant
American Society for Microbiology.
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11. Phylogenetic identification and in situ detection of individual microbial cells without cultivation.
The frequent discrepancy between direct microscopic counts and numbers of culturable bacteria from environmental samples is just one of several indications that we currently know only a minor part of the diversity of microorganisms in nature. A combination of direct retrieval of rRNA sequences and whole-cell oligonucleotide probing can be used to detect spec