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	Provedor de dados BJID (1) Autor Benini,Vanda (1) Berezin,Eitan N. (1) Guidoni,Eliana Biondi Medeiros (1) Nigro,Stanley (1) Santiago,Nataly A (1) Toporovski,Julio (1) Mais... Palavra-chave Bacterial resistance (1) Escherichia coli (1) Pediatrics urinary tract infection (1) Urinary tract infection (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2008 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 67 Primeira ... 1 2 3 4 ... Última Investigation about the efficiency of the bioaugmentation technique when applied to diesel oil contaminated soils BABT Mariano,Adriano Pinto; Angelis,Dejanira de Franceschi de; Pirôllo,Maria Paula Santos; Contiero,Jonas; Bonotto,Daniel Marcos. This work investigated the efficiency of the bioaugmentation technique when applied to diesel oil contaminated soils collected at three service stations. Batch biodegradation experiments were carried out in Bartha biometer flasks (250 mL) used to measure the microbial CO2 production. Biodegradation efficiency was also measured by quantifying the concentration of hydrocarbons. In addition to the biodegradation experiments, the capability of the studied cultures and the native microorganisms to biodegrade the diesel oil purchased from a local service station, was verified using a technique based on the redox indicator 2,6 -dichlorophenol indophenol (DCPIP). Results obtained with this test showed that the inocula used in the biodegradation experiments were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Bioaugmentation; Soil; Diesel oil; Service station. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500030 Physiological Characterization of Fungal Inoculum for Biotechnological Remediation of Soils BABT Ballaminut,Nara; Machado,Kátia Maria Gomes; Oliveira,Luisa Helena dos Santos; Matheus,Dácio Roberto. The aim of this work was to study the bioremediating potential of Lentinus crinitus CCIBt2611 according to the physiological condition of the inoculum. Inoculum was prepared using sugarcane ground husk (C:N 90), at several physiological ages and applied in soil contaminated with pentachlorophenol. The inoculum's potential was assessed by evaluating the mycelium's vigor at soil's colonization, determination of peroxidase and phenoloxidase activities, in vitro degradation of Remazol Brilliant Blue R and in vivo degradation of pentachlorophenol. The results showed that the assessed parameters were relevant to identify the quality of the inoculum. For L. crinitus, 10 day old inoculum showed good soil-colonization speed with significant enzymatic activities,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Laccase; Manganese-dependent peroxidase; Organochlorine degradation; Fungal inoculum quality; Bioremediation; Environmental sanitization. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000400561 In situ biosurfactant production and hydrocarbon removal by Pseudomonas putida CB-100 in bioaugmented and biostimulated oil-contaminated soil BJM Ángeles,Martínez-Toledo; Refugio,Rodríguez-Vázquez. In situ biosurfactant (rhamnolipid) production by Pseudomonas putida CB-100 was achieved during a bioaugmented and biostimulated treatment to remove hydrocarbons from aged contaminated soil from oil well drilling operations. Rhamnolipid production and contaminant removal were determined for several treatments of irradiated and non-irradiated soils: nutrient addition (nitrogen and phosphorus), P. putida addition, and addition of both (P. putida and nutrients). The results were compared against a control treatment that consisted of adding only sterilized water to the soils. In treatment with native microorganisms (non-irradiated soils) supplemented with P. putida, the removal of total petroleum hydrocarbons (TPH) was 40.6%, the rhamnolipid production was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Irradiated soil; Total petroleum hydrocarbons; Rhamnolipids; P. putida. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200040 Gasoline biodegradation in different soil microcosms BJM Cunha,Cláudia Duarte da; Leite,Selma Gomes Ferreira. The objective of this study was to evaluate gasoline biodegradation in batch soil microcosms. Microorganisms able to grow in the presence of gasoline were isolated from soil. Several treatment systems were performed using both isolated strains and Pseudomonas putida obtained from a culture collection. The treatment system using only autochthonous microflora (system 1) presented an average value of degradation of 50%. The association of Pseudomonas putida, Burkholderia cepacia, Pseudomonas alcaligenes and the native soil microflora (system 13) presented significant percentage of removal of n-undecane (88.7), n-dodecane (61.3) and n-tridecane (66.7). According to these results, systems 1 and 13 revealed considerable potential for application in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Gasoline; Soil; Biodegradation. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000100011 Soil bacteria showing a potential of chlorpyrifos degradation and plant growth enhancement BJM Akbar,Shamsa; Sultan,Sikander. ABSTRACT Background: Since 1960s, the organophosphate pesticide chlorpyrifos has been widely used for the purpose of pest control. However, given its persistence and toxicity towards life forms, the elimination of chlorpyrifos from contaminated sites has become an urgent issue. For this process bioremediation is the method of choice. Results: Two bacterial strains, JCp4 and FCp1, exhibiting chlorpyrifos-degradation potential were isolated from pesticide contaminated agricultural fields. These isolates were able to degrade 84.4% and 78.6% of the initial concentration of chlorpyrifos (100 mg L-1) within a period of only 10 days. Based on 16S rRNA sequence analysis, these strains were identified as Achromobacter xylosoxidans (JCp4) and Ochrobactrum sp.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Chlorpyrifos; Bioremediation; Phosphate solubilization; Achromobacter; IAA. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000300563 Bioremediation of dyes by fungi isolated from contaminated dye effluent sites for bio-usability BJM Rani,Babita; Kumar,Vivek; Singh,Jagvijay; Bisht,Sandeep; Teotia,Priyanku; Sharma,Shivesh; Kela,Ritu. Biodegradation and detoxification of dyes, Malachite green, Nigrosin and Basic fuchsin have been carried out using two fungal isolates Aspergillus niger, and Phanerochaete chrysosporium, isolated from dye effluent soil. Three methods were selected for biodegradation, viz. agar overlay and liquid media methods; stationary and shaking conditions at 25 °C. Aspergillus niger recorded maximum decolorization of the dye Basic fuchsin (81.85%) followed by Nigrosin (77.47%), Malachite green (72.77%) and dye mixture (33.08%) under shaking condition. Whereas, P. chrysosporium recorded decolorization to the maximum with the Nigrosin (90.15%) followed by Basic fuchsin (89.8%), Malachite green (83.25%) and mixture (78.4%). The selected fungal strains performed better... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Dyes; Fungi; Microbial bioassay; Seed germination. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300039 Biodegradability of commercial and weathered diesel oils BJM Mariano,Adriano Pinto; Bonotto,Daniel Marcos; Angelis,Dejanira de Franceschi de; Pirôllo,Maria Paula Santos; Contiero,Jonas. This work aimed to evaluate the capability of different microorganisms to degrade commercial diesel oil in comparison to a weathered diesel oil collected from the groundwater at a petrol station. Two microbiological methods were used for the biodegradability assessment: the technique based on the redox indicator 2,6 - dichlorophenol indophenol (DCPIP) and soil respirometric experiments using biometer flasks. In the former we tested the bacterial cultures Staphylococcus hominis, Kocuria palustris, Pseudomonas aeruginosa LBI, Ochrobactrum anthropi and Bacillus cereus, a commercial inoculum, consortia obtained from soil and groundwater contaminated with hydrocarbons and a consortium from an uncontaminated area. In the respirometric experiments it was... Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodegradability; Bioremediation; Commercial oil diesel; Weathered diesel oil. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100028 Toxicological evaluation of vegetable oils and biodiesel in soil during the biodegradation process BJM Tamada,Ivo S.; Montagnolli,Renato N.; Lopes,Paulo R. M.; Bidoia,Ederio D.. Vegetable oils and their derivatives, like biodiesel, are used extensively throughout the world, thus posing an environmental risk when disposed. Toxicity testing using test organisms shows how these residues affect ecosystems. Toxicity tests using earthworms (Eisenia foetida. are widespread because they are a practical resource for analyzing terrestrial organisms. For phytotoxicological analysis, we used seeds of arugula (Eruca sativa and lettuce (Lactuca sativa. to analyze the germination of seeds in contaminated soil samples. The toxicological experiment was conducted with four different periods of biodegradation in soil: zero days, 60 days, 120 days and 180 days. The studied contaminants were soybean oil (new and used) and biodiesel (B100). An... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Toxicity; Soybean oil; Soil. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400042 Laboratory study on the bioremediation of diesel oil contaminated soil from a petrol station BJM Mariano,Adriano Pinto; Kataoka,Ana Paula de Arruda Geraldes; Angelis,Dejanira de Franceschi de; Bonotto,Daniel Marcos. The purpose of the present study was to investigate possible methods to enhance the rate of aerobic biodegradation of hydrocarbons (ex-situ treatments). In this work, the bioremediation processes were applied to a sandy soil with a high level of contamination originated from the leakage of a diesel oil underground storage tank at a petrol station. Laboratory scale experiments (Bartha biometer flasks) were used to evaluate the biodegradation of the diesel oil. Enhancement of biodegradation was carried out through biostimulation (addition of nitrogen and phosphorus solutions or Tween 80 surfactant) and bioaugmentation (bacterial consortium isolated from a landfarming system). To investigate interactions between optimizing factors, and to find the right... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Soil; Diesel Oil; Petrol Station. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200030 Bioremediation of polycyclic aromatic hydrocarbon (PAH) compounds: (acenaphthene and fluorene) in water using indigenous bacterial species isolated from the Diep and Plankenburg rivers, Western Cape, South Africa BJM Alegbeleye,Oluwadara Oluwaseun; Opeolu,Beatrice Olutoyin; Jackson,Vanessa. Abstract This study was conducted to investigate the occurrence of PAH degrading microorganisms in two river systems in the Western Cape, South Africa and their ability to degrade two PAH compounds: acenaphthene and fluorene. A total of 19 bacterial isolates were obtained from the Diep and Plankenburg rivers among which four were identified as acenaphthene and fluorene degrading isolates. In simulated batch scale experiments, the optimum temperature for efficient degradation of both compounds was determined in a shaking incubator after 14 days, testing at 25 °C, 30 °C, 35 °C, 37 °C, 38 °C, 40 °C and 45 °C followed by experiments in a Stirred Tank Bioreactor using optimum temperature profiles from the batch experiment results. All experiments were run... Tipo: Info:eu-repo/semantics/article Palavras-chave: Polycyclic aromatic hydrocarbons (PAHs); Bioremediation; Bioreactor; PAH degrading microorganisms. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200314 Changes in the microbial community during bioremediation of gasoline-contaminated soil BJM Leal,Aline Jaime; Rodrigues,Edmo Montes; Leal,Patrícia Lopes; Júlio,Aline Daniela Lopes; Fernandes,Rita de Cássia Rocha; Borges,Arnaldo Chaer; Tótola,Marcos Rogério. Abstract We aimed to verify the changes in the microbial community during bioremediation of gasoline-contaminated soil. Microbial inoculants were produced from successive additions of gasoline to municipal solid waste compost (MSWC) previously fertilized with nitrogen-phosphorous. To obtain Inoculant A, fertilized MSWC was amended with gasoline every 3 days during 18 days. Inoculant B received the same application, but at every 6 days. Inoculant C included MSWC fertilized with N–P, but no gasoline. The inoculants were applied to gasoline-contaminated soil at 10, 30, or 50 g/kg. Mineralization of gasoline hydrocarbons in soil was evaluated by respirometric analysis. The viability of the inoculants was evaluated after 103 days of storage under refrigeration... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Gasoline degradation; Soil contamination; Microbial inoculants; Inoculant storage. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000200342 Isolation and identification of Profenofos degrading bacteria BJM Malghani,Saadatullah; Chatterjee,Nivedita; Yu,Hu Xue; Luo,Zejiao. An enrichment culture technique was used to isolate bacterial strains responsible for the biodegradation of profenofos in a soil from Hubei province of central China. Two pure bacterial cultures, named W and Y, were isolated and subsequently characterized by sequencing of 16S rRNA genes and biochemical tests. Isolate W showed 96% similarity to the 16S rRNA gene of a Pseudomonas putida unlike Y which showed 99% similarity to the 16S rRNA gene of Burkholderia gladioli. Both strains grew well at pH 5.5-7.2 with a broad temperature profile ranging from 28º to 36 ºC. Bioremediation of profenofos-contaminated soil was examined using soil treated with 200 ug g-1; profenofos resulted in a higher degradation rate than control soils without inoculation. In a mineral... Tipo: Info:eu-repo/semantics/article Palavras-chave: Profenofos; Organophosphate pesticide; Gas Chromatography; Bioremediation. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000400021 Morphological changes and growth of filamentous fungi in the presence of high concentrations of PAHs BJM Zafra,German; Absalón,Angel E.; Cortés-Espinosa,Diana V.. In this study, we evaluated the effect of low and high molecular weight polycyclic aromatic hydrocarbons (PAHs), i.e., Phenanthrene, Pyrene and Benzo[a]pyrene, on the radial growth and morphology of the PAH-degrading fungal strains Aspergillus nomius H7 and Trichoderma asperellum H15. The presence of PAHs in solid medium produced significant detrimental effects on the radial growth of A. nomius H7 at 4,000 and 6,000 mg L−1 and changes in mycelium pigmentation, abundance and sporulation ability at 1,000–6,000 mg L−1. In contrast, the radial growth of T. asperellum H15 was not affected at any of the doses tested, although sporulation was observed only up to 4,000 mg L−1 and as with the H7 strain, some visible changes in sporulation patterns and mycelium... Tipo: Info:eu-repo/semantics/article Palavras-chave: Polycyclic aromatic hydrocarbons (PAHs); Bioremediation; Radial growth; Sporulation; Fungal physiology. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000300937 Biotransformation of Tributyltin chloride by Pseudomonas stutzeri strain DN2 BJM Khanolkar,Dnyanada S.; Naik,Milind Mohan; Dubey,Santosh Kumar. A bacterial isolate capable of utilizing tributyltin chloride (TBTCl) as sole carbon source was isolated from estuarine sediments of west coast of India and identified as Pseudomonas stutzeri based on biochemical tests and Fatty acid methyl ester (FAME) analysis. This isolate was designated as strain DN2. Although this bacterial isolate could resist up to 3 mM TBTCl level, it showed maximum growth at 2 mM TBTCl in mineral salt medium (MSM). Pseudomonas stutzeri DN2 exposed to 2 mM TBTCl revealed significant alteration in cell morphology as elongation and shrinkage in cell size along with roughness of cell surface. FTIR and NMR analysis of TBTCl degradation product extracted using chloroform and purified using column chromatography clearly revealed... Tipo: Info:eu-repo/semantics/article Palavras-chave: TBTCl; Morphological alteration; Biotransformation; DBTCl2; Bioremediation. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400014 Salicylic acid degradation from aqueous solutions using Pseudomonas fluorescens HK44: parameters studies and application tools BJM Silva,Tatyane R.; Valdman,Erika; Valdman,Belkis; Leite,Selma G.F.. The optimal conditions for salicylic acid biodegradation by Pseudomonas fluorescens HK44 were determined in this study with the intention to create a microbial sensor. Kinetic experiments permitted a definition of 60 and 30min the time needed to achieve the maximum degradation of salicylic acid presented in a medium with and without yeast extract, respectively. The degradation in medium without yeast extract and the quantification by spectrophotometry 230 nm were selected to be used in further tests. The use of preactivated cells or on the exponential growth phase showed better salicylic acid degradation percentages when compared to nonactivated cells or on the stationary growth state. Finally, the best cellular concentration used on the salicylic acid... Tipo: Info:eu-repo/semantics/article Palavras-chave: Salicylic acid; Pseudomonas fluorescens HK44; Bioremediation. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000100009 Heavy metal resistance of microorganisms isolated from coal mining environments of Santa Catarina BJM Castro-Silva,Marcus Adonai; Lima,André Oliveira de Souza; Gerchenski,Ana Valéria; Jaques,Daniela Batista; Rodrigues,André Luis; Souza,Pricila Lima de; Rörig,Leonardo Rubi. The coal mining activity is characterized by the generation of large amount of by-products. One of them is pyrite, which tends to acidify the water, solubilizing heavy metals. As a consequence the environment becomes acid and rich in heavy metals, selecting microorganisms able to survive in this condition, which are of great interest as bioremediation agents. This work describes the isolation and characterization of microorganisms from a coal mining area in Santa Catarina. These microorganisms comprised bacteria, fungi and yeasts resistant to zinc, nickel and cadmium. Tipo: Info:eu-repo/semantics/article Palavras-chave: Heavy metal resistance; Coal mining; Acidophilic microorganisms; Bioremediation. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000500015 Analysis for the presence of determinants involved in the transport of mercury across bacterial membrane from polluted water bodies of India BJM Jan,Arif Tasleem; Azam,Mudsser; Choi,Inho; Ali,Arif; Haq,Qazi Mohd. Rizwanul. Abstract Mercury, which is ubiquitous and recalcitrant to biodegradation processes, threatens human health by escaping to the environment via various natural and anthropogenic activities. Non-biodegradability of mercury pollutants has necessitated the development and implementation of economic alternatives with promising potential to remove metals from the environment. Enhancement of microbial based remediation strategies through genetic engineering approaches provides one such alternative with a promising future. In this study, bacterial isolates inhabiting polluted sites were screened for tolerance to varying concentrations of mercuric chloride. Following identification, several Pseudomonas and Klebsiella species were found to exhibit the highest... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioremediation; Mercury; Resistance determinants; Mercury transport. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100055 Biodegradation of crude oil by individual bacterial strains and a mixed bacterial consortium BJM Santisi,Santina; Cappello,Simone; Catalfamo,Maurizio; Mancini,Giuseppe; Hassanshahian,Mehdi; Genovese,Lucrezia; Giuliano,Laura; Yakimov,Michail M.. Three bacterial isolates identified as Alcanivorax borkumensis SK2, Rhodococcus erythropolis HS4 and Pseudomonas stutzeri SDM, based on 16S rRNA gene sequences, were isolated from crude oil enrichments of natural seawater. Single strains and four bacterial consortia designed by mixing the single bacterial cultures respectively in the following ratios: (Alcanivorax: Pseudomonas, 1:1), (Alcanivorax: Rhodococcus, 1:1), (Pseudomonas: Rhodococcus, 1:1), and (Alcanivorax: Pseudomonas: Rhodococcus, 1:1:1), were analyzed in order to evaluate their oil degrading capability. All experiments were carried out in microcosms systems containing seawater (with and without addition of inorganic nutrients) and crude oil (unique carbon source). Measures of total and live... Tipo: Info:eu-repo/semantics/article Palavras-chave: Alcanivorax; Pseudomonas; Rhodococcus; Bioremediation; Bioaugmentation. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000200377 Chemical and microbiological characterization of mangrove sediments after a large oil-spill in Guanabara Bay - RJ - Brazil BJM Maciel-Souza,Maria do Carmo; Macrae,Andrew; Volpon,Antonia Garcia Torres; Ferreira,Patrícia Silva; Mendonça-Hagler,Leda Cristina. Seventeen months after a 1,3 million L oil spill into Guanabara Bay, analyses of mangrove sediments showed that the three sites closest to the spill remain highly polluted (>10 µg-g-1 polyaromatic hydrocarbons). A fourth site was less polluted, from which most hydrocarbon degrading bacteria were isolated. Tipo: Info:eu-repo/semantics/other Palavras-chave: Mangrove; PAH; Bioprospecting; Bioremediation; Oil spill; Polyaromatic hydrocarbons. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000300013 Bioconversion of petroleum hydrocarbons in soil using apple filter cake BJM Medaura,M. Cecilia; Ércoli,Eduardo C.. The aim of this study was to investigate the feasibility of using apple filter cake, a fruit-processing waste to enhance the bioremediation of petroleum contaminated soil. A rotating barrel system was used to study the bioconversion of the xenobiotic compound by natural occurring microbial population. The soil had been accidentally polluted with a total petroleum hydrocarbon concentration of 41,000 ppm. Although this global value was maintained during the process, microbial intervention was evidenced through transformation of the petroleum fractions. Thus, fractions that represent a risk for the environment (GRO, Gasoline Range Organics i.e., C6 to C10-12; DRO, Diesel Range Organics i.e., C8-12 to C24-26 and RRO, Residual Range Organics i.e., C25 to C35)... Tipo: Info:eu-repo/semantics/article Palavras-chave: Apple filter cake; Bioconversion; Bioremediation; Petroleum contaminated soil. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300004 Registros recuperados: 67 Primeira ... 1 2 3 4 ... Última

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