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Application of bacterial and yeast biosurfactants for enhanced removal and biodegradation of motor oil from contaminated sand Electron. J. Biotechnol.
Chaprão,Marcos J; Ferreira,Isabela N.S; Correa,Priscilla F; Rufino,Raquel D; Luna,Juliana M; Silva,Elias J; Sarubbo,Leonie A.
Background This study investigated the potential application of two biosurfactants for enhanced removal capability and biodegradation of motor oil contaminated sand under laboratory conditions. The biosurfactants were produced by the yeast Candida sphaerica and by the bacterium Bacillus sp. cultivated in low-cost substrates. The ability of removing motor oil from soil by the two biosurfactants was identified and compared with that of the synthetic surfactants Tween 80 and Triton X-100. Results Both crude and isolated biosurfactants showed excellent effectiveness on motor oil removal from contaminated sand under kinetic conditions (70-90%), while the synthetic surfactants removed between 55 and 80% of the oil. A contact time of 5-10 min under agitation...
Tipo: Journal article Palavras-chave: Bacillus sp; Bioremediation; Candida sphaerica; Petroleum; Sand-packed column.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000600014
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BACTERIAL DEGRADATION AND BIOREMEDIATION OF CHLORINATED HERBICIDES AND BIPHENYLS J. Soil Sci. Plant Nutr.
Seeger,Michael; Hernández,Marcela; Méndez,Valentina; Ponce,Bernardita; Córdova,Macarena; González,Myriam.
Chlorinated herbicides (e.g. s-triazines) and polychlorobiphenyls (PCBs) are persistent organic pollutants (POPs) that are widely distributed in the environment. s-Triazine herbicides are used in agriculture and forestry in diverse regions of the world. PCBs were produced worldwide for industrial applications, and an important amount of these compounds have been released into the environment. PCBs and s-triazines are toxic compounds that could act as endocrine disrupters and cause cancer. Therefore, environmental pollution with s-triazines and PCBs is of increasing concern. Bioremediation is an attractive technology for the decontamination of polluted sites. Microorganisms play a main role in the removal of POPs from the environment. Diverse bacteria able...
Tipo: Journal article Palavras-chave: Bacterial degradation; I-triazines; PCBs; Catabolic genes; Genome; Bioremediation.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100007
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Bioaugmentation of latex rubber sheet wastewater treatment with stimulated indigenous purple nonsulfur bacteria by fermented pineapple extract Electron. J. Biotechnol.
Kornochalert,Nastee; Kantachote,Duangporn; Chaiprapat,Sumate; Techkarnjanaruk,Somkiet.
Background Treating latex rubber sheet wastewater often leads to the generation of a rotten-egg odor from toxic H2S. To increase the treatment efficiency and eliminate H2S, purple nonsulfur bacteria (PNSB), prepared by supplementing non-sterile rubber sheet wastewater (RAW) with fermented pineapple extract (FPE), were used to treat this wastewater under microaerobic light conditions. The following 3 independent variables: chemical oxygen demand (COD), initial pH and FPE dose were investigated using the Box-Behnken design to find optimal conditions for stimulating the growth of indigenous PNSB (PNSBsi). Results The addition of 2.0% FPE into RAW, which had a COD of 2000 mg L- 1 and an initial pH of 7.0, significantly decreased oxidation reduction potential...
Tipo: Journal article Palavras-chave: Bioremediation; Fermented plant extract; Response surface methodology; Rotten-egg odor; Rubber wastewater.
Ano: 2014 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000400006
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Bioremediation of pesticides in soils. Repositório Alice
MELO, I. S. de.
bitstream/item/165915/1/2004SP-18-Melo-Bioremediation-15817.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Bioremediation; Pesticides; Soils.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078609
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Biorremediación de hidrocarburos de los sedimentos de la Bahía de La Habana OceanDocs
Núñez, R.; Ortiz, E.; Fonseca, E.L.; Barban, O.; Almazán, V.; Pizarro, R.; Okuda, I..
The Bay of Havana is one of more polluted ecosystems in our country, because the hydrocarbons concentration in the water and sediment is very high. The bioremediation is a good technique for the elimination of the contaminant. In the Center of Marine Bioproduct we have developed some different bioproduct based on hydrocarbons degrading marine bacteria for the eliminatation the hydrocarbons in sea water. The bioproduct called BIOIL-FC has been used with excellent results in the mitigation of different oil spill in cuban ecosystems. In this work were compared the effectiveness of biodegradation between bioaugmentation with BIOIL-FC and isolated microorganisms from sediment of the bay and the biostimulation with inorganic nitrogen and phosphorus. In this...
Tipo: Journal Contribution Palavras-chave: Bioremediation; Bioremediation; Http://aims.fao.org/aos/agrovoc/c_35028.
Ano: 2002 URL: http://hdl.handle.net/1834/2920
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Capacity resistance of endophytic fungi the mercury. Repositório Alice
PIETRO-SOUZA, W.; VENDRUSCULLO, S. J.; MELLO, I. S.; LIOTTI, R. G.; BICHARA, K. P. A.; SILVA, G. F.; ALMEIDA, E. G.; NUNES DA CUNHA, C.; SOARES, M. A..
Contamination of biological systems by mercury represents a global concern, given the difficulty of degradation, persistence and potential toxicity of this metal in the environment. Remediation strategies of soils contaminated with mercury are required and the use of microorganisms as bioremediation agents is fully justified, in particular, the various mechanisms of tolerance to heavy metals allocated to them, particularly for fungi arising from various chemical processes, such as transformation valence, intra and extracellular precipitation and oxidation. Our hypothesis is that endophytic fungi isolated from areas contaminated by mercury present higher resistance to this metal.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: MIC; Wetland; Heavy metal; Bioremediation.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1027546
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Copper phytoextraction and phytostabilization by Brachiaria decumbens Stapf. in vineyard soils and a copper mining waste. Repositório Alice
ANDREAZZA, R.; BORTOLON, L.; PIENIZ, S.; CAMARGO, F. A. O.; BORTOLON, E. S. O..
Brachiaria decumbens is a high biomass plant with great potential for phytoremediation of copper-polluted soils. The current study aimed to evaluate B. decumbens plants for phytoextraction and phytostabilization use in two different copper contaminated vineyard soils and a copper mining waste. Also, the macro and micronutrients uptake were evalu- ated after plants growth in copper contaminated soils. B. decumbens was cultivated in two vineyard soils (Inceptisol and Mollisol) and a copper mining waste for 47 days of growth in greenhouse. Then, B. decumbens?s nutrient uptake was evaluated, and it?s potential application in phytoremediation techniques for the phytoextraction and phytostabilization of copper contamination. B. decumbens exhibited high levels of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Brachiaria decumbens; Cobre; Poluição; Solo; Absorção de nutrientes; Metal pesado; Bioremediation; Nutrient uptake; Soil pollution.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/969423
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Diversidade e funcionalidade fúngica na biorremediação de manguezais contaminados com petróleo. Repositório Alice
FASANELLA, C .C.; DIAS, A. C. F.; MELO, I. S. de; LUVIZOTTO, D.; PIZZIRANI-KLEINER, A. A.; DINI-ANDREOTE, F..
2011
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Fungo; Mangue; Bioremediation.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/917337
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EFFECTIVENESS OF THE APPLICATION OF ARBUSCULAR MYCORRHIZA FUNGI AND ORGANIC AMENDMENTS TO IMPROVE SOIL QUALITY AND PLANT PERFORMANCE UNDER STRESS CONDITIONS J. Soil Sci. Plant Nutr.
Medina,Almudena; Azcón,Rosario.
Plant growth is limited in arid and/or contaminated sites due to the adverse conditions coming from heavy metal (HM) contamination and/or water stress. Moreover, soils from these areas are generally characterised by poor soil structure, low water-holding capacity, lack of organic matter and nutrient deficiency. In order to carry out a successful re-afforestation, it is necessary to improve soil quality and the ability of plants species to resist this harsh environment. The symbiosis with arbuscular mycorrhizal (AM) fungi has been proposed as one of the mechanisms of plant heavy metal tolerance and water stress avoidance. On the other hand, addition of organic amendments to the soil can reverse degradation of soil properties. Agro-waste residues such as dry...
Tipo: Journal article Palavras-chave: Arbuscular mycorrhiza (AM); Fungi; Organic amendment; Heavy metal (HM) contamination; Water stress; Drought; Organic matter; Rock phosphate; Revegetation; Bioremediation; Aspergillus niger; Phosphate solubilization.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100009
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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
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Isolation and characterization of novel potent Cr(VI) reducing alkaliphilic Amphibacillus sp. KSUCr3 from hypersaline soda lakes Electron. J. Biotechnol.
Ibrahim,Abdelnasser S.S; El-Tayeb,Mohamed A; Elbadawi,Yahya B; Al-Salamah,Ali A.
A strain KSUCr3 with extremely high Cr(VI)-reducing ability under alkaline conditions was isolated from hypersaline soda lakes and identified as Amphibacillus sp. on the basis of 16S rRNA gene sequence analysis. The results showed that Amphibacillus sp. strain KSUCr3 was tolerance to very high Cr(VI) concentration (75 mM) in addition to high tolerance to other heavy metals including Ni2+ (100 mM), Mo2+ (75 mM), Co2+ (5 mM), Mn2+ (100 mM), Zn2+ (2 mM), Cu2+ (2 mM) and Pb (75 mM). Strain KSUCr3 was shown to be of a high efficiency in detoxifying chromate, as it could rapidly reduce 5 mM of Cr(VI) to a non detectable level over 24 hrs. In addition, strain KSUCr3 could reduce Cr(VI) efficiently over a wide range of initial Cr(VI) concentrations (1-10 mM) in...
Tipo: Journal article Palavras-chave: Amphibacillus sp.; Bioremediation; Chromate reduction; Heavy metals; Soda lake.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400004
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Isolation of purple nonsulfur bacteria for the removal of heavy metals and sodium from contaminated shrimp ponds Electron. J. Biotechnol.
Panwichian,Saijai; Kantachote,Duangporn; Wittayaweerasak,Banjong; Mallavarapu,Megharaj.
In order to determine whether waters used for the shrimp cultivation contained toxic levels of heavy metals (HMs) and sodium (Na), analysis was carried out on 31 shrimp ponds in areas of southern Thailand. Purple nonsulfur bacteria (PNB) were also isolated from the same ponds to investigate if they could be used for bioremediation of the above contaminants. The highest HMs concentrations of the sediment samples in mg/kg dry weight were found as follows: 0.75 cadmium (Cd), 62.63 lead (Pb), 34.60 copper (Cu) and 58.50 zinc (Zn). However, all sediment samples met Hong Kong standards for dredged sediment. In contrast, contamination of Cu (9-30 µg/L) and Zn (140-530 µg/L) exceeding the standard guidelines for marine aquatic animal set by the Pollution Control...
Tipo: Journal article Palavras-chave: Bioremediation; Heavy metals; Purple nonsulfur bacteria; Salinity; Shrimp farming.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000400003
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Lactic acid bacteria ability to degrade the pesticide chlorpyrifos. Repositório Alice
PINTO, G. D. A; KOBLITZ, M. G. B.; CASTRO, I. M. de; MIGUEL, M. A. L..
bitstream/item/170483/1/ABSTRACT-SLACA-1-Izabela.docx
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Pesticide; Lactic Acid Bacteria; Bioremediation; Pesticides.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1084475
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Microorganismos degradadores de hidrocarburos del petróleo aislados de la rizósfera de manglar del estado de Campeche y su potencial en la biorremediación. Colegio de Postgraduados
Ramírez Elías, Miguel Ángel.
Este estudio identificó y seleccionó bacterias hidrocarbonoclastas del petróleo y diésel aisladas de la rizósfera de cuatro especies de manglar del estado de Campeche y evaluó su potencial en la biorremediación. Este trabajo se dividió en tres fases experimentales. La primera fase describe la identificación de grupos funcionales microbianos cultivables con potencial biotecnológico aislados de la rizósfera de mangle rojo, mangle blanco, mangle negro y mangle botoncillo de la Laguna de Términos del estado de Campeche. La segunda fase seleccionó e identificó las mejores bacterias hidrocarbonoclastas del petróleo y diésel correspondiendo al género Pseudomonas y Rhodococcus respectivamente, aisladas de la rizósfera de mangle blanco. La tercera fase describe el...
Palavras-chave: Biorremediación; Hidrocarburos del petróleo; Bioremediation; Petroleum hydrocarbons; Mangroves; Campeche; Manglares.
Ano: 2014 URL: http://hdl.handle.net/10521/2332
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MODERN APPROACHES FOR THE STUDY OF s-TRIAZINE HERBICIDE BIOREMEDIATION IN AGRICULTURAL SOILS R.C. Suelo Nutr. Veg.
Hernández,Marcela; Morgante,Verónica; Flores,Cecilia; Villalobos,Patricio; González,Myriam; Miralles,Pola; Dinamarca,Alejandro; Seeger,Michael.
The extensive use of s-triazine herbicides in diverse countries causes environmental and health concern. Simazine and atrazine are s-triazines widely used in agriculture and forestry. Although, natural dissipation of s-triazines in soils by physicochemical processes has been described, the main mechanism for their removal is biological degradation by microorganisms. Bioremediation is a successful strategy for the removal of i-triazines in soil. For bioaugmentation processes, s-triazine-degrading bacteria are required, which isolation from agricultural soils was described in this report. Studies of s-triazine adsorption and leaching in soil are useful to determine the bioavailability of these herbicides. The detection of s-triazine-degrading catabolic...
Tipo: Journal article Palavras-chave: Í-triazine; Simazine; Biodegradation; Bioremediation; Herbicide.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000200004
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Nanotechnologies associated to floral resources in agri-food sector Acta Agron. (Palmira)
Ammar,Ahmad S.
Abstract Nanotechnology advent in agri-food sector is set to prompt next revolution in agricultural engineering. However, there is a perpetually rising need for development of new nanotechnologies that could synchronically work with various agrochemicals such as fertilizers, pesticides, herbicides, and growth promoters to potentially increase farmlands efficiency, preserve agro-ecosystems, and diminish the negative health risks imposed by conventional practices. In nanotechnology, smart delivery systems that utilize either nanoscale carriers such as clay nanotubes and carbon nanotubes or nanoparticles such as mesoporous silica nanoparticles and silver nanoparticles, could enable not only the accurate and targeted delivery of functional ingredients but also...
Tipo: Journal article Palavras-chave: Agrochemicals; Bioremediation; Crop breeding; Micro-fabricated xylem vessels; Smart delivery systems; Smart nano-dust.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100146
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Novel s-triazine-degrading bacteria isolated from agricultural soils of central Chile for herbicide bioremediation Electron. J. Biotechnol.
Hernández García,Marcela; Morgante,Verónica; Ávila Perez,Marcela; Villalobos Biaggini,Patricio; Miralles Noé,Pola; González Vergara,Myriam; Seeger Pfeiffer,Michael.
s-Triazine-degrading bacterial strains were isolated from long-term simazine-treated agricultural soils of central Chile. The number of culturable heterotrophic bacteria of these agricultural soils (7 x 10(6) CFU/g of dry soil) was not affected by simazine application on field. The simazine-degrading bacterial strains P51, P52 and C53 were isolated by enrichment in minimal medium using simazine as the sole nitrogen source. Resting cells of strains P51 and P52 degraded >80% of simazine within 48 hrs, whereas strain C53 was able to remove >60% of the herbicide. The atzA and atzD genes of the s-triazine upper and lower catabolic pathways were detected in strains P51 and C53, while only atzD gene was observed in strain P52. To compare the bacterial 16S...
Tipo: Journal article Palavras-chave: Arthrobacter; Biodegradation; Bioremediation; Simazine; Stenotrophomonas; S-triazine.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000500005
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Risk and the decision to produce biomass crops: a stochastic analysis AgEcon
Clancy, Daragh; Breen, James P.; Thorne, Fiona S.; Wallace, Michael T..
There is increasing interest in biomass crops as an alternative farm enterprise. However, given the relatively low uptake of these crops in Ireland, there is limited information concerning the risk associated with their production and its potential impact on returns. The uncertainty surrounding risky variables such as the costs of production, yield level, price per tonne and opportunity cost of land make it difficult to accurately calculate the returns to biomass crops. Their lengthy production lifespan may only serve to heighten the level of risk that affects key variables. A stochastic budgeting model is used to calculate the returns from willow and miscanthus. The opportunity cost of land is accounted for through the inclusion of the foregone returns...
Tipo: Conference Paper or Presentation Palavras-chave: Biomass; Bioremediation; Stochastic Budgeting; NPV; SERF; Resource /Energy Economics and Policy.
Ano: 2010 URL: http://purl.umn.edu/91955
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ROLE OF ENZYMES IN THE REMEDIATION OF POLLUTED ENVIRONMENTS J. Soil Sci. Plant Nutr.
Rao,M.A; Scelza,R; Scotti,R; Gianfreda,L.
Environmental pollution is growing more and more due to the indiscriminate and frequently deliberate release of hazardous, harmful substances. Research efforts have been devoted to develop new, low-cost, low-technology, eco-friendly treatments capable of reducing and even eliminating pollution in the atmosphere, the hydrosphere and soil environments. Among biological agents, enzymes have a great potentiality to effectively transform and detoxify polluting substances because they have been recognized to be able to transform pollutants at a detectable rate and are potentially suitable to restore polluted environments. This brief review will examine some classes of pollutants and enzymes capable of transforming them effectively into innocuous products....
Tipo: Journal article Palavras-chave: Pollutants; Enzymes; Environmental pollution; Bioremediation.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000100008
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Selección de cepas de hongos comestibles productoras de lacasas y su potencial de aplicación a procesos de biorremediación en zonas contaminadas con hidrocarburos en México. Colegio de Postgraduados
Spezzia Mazzocco, Teresita.
Quince cepas de hongos comestibles pertenecientes a los géneros Pleurotus, Ganoderma, Lentinula y Coprinopsis, fueron evaluadas en cuanto a su actividad enzimática utilizando el medio de cultivo agar con extracto de malta (EMA), adicionado con ácido 2,2'–azino–bis–(3–etillbenzotiazolin–6–sulfónico) (ABTS), 2,6-dimetoxyphenol (DMP) y guayacol. Se seleccionaron nueve cepas para determinar cuantitativamente la actividad de lacasas. Esta evaluación se realizó con el medio de cultivo de extracto de malta líquido (EMB) suplementado con 0.1 mM de sulfato de cobre. Se demostró que las cepas CP-50 de Pleurotus ostreatus y CP-267 de P. pulmonarius son altamente productoras de actividad de lacasas, obteniéndose 4,000 U/ml y 2,500 U/ml, respectivamente. Estas cepas...
Palavras-chave: Antraceno; Biorremediación; Hongos comestibles; Lacasas; EDAR; Estrategias para el Desarrollo Agrícola Regional; Doctorado; Anthracene; Bioremediation; Laccase; Mushrooms.
Ano: 2012 URL: http://hdl.handle.net/10521/1826
Registros recuperados: 24
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