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| Mercimek,Hatice Aysun; Dincer,Sadik; Guzeldag,Gulcihan; Ozsavli,Aysenur; Matyar,Fatih; Arkut,Afet; Kayis,Fikret; Ozdenefe,Melis Sumengen. |
| Degradation of 2,4,6-trinitrotoluene (TNT), a nitroaromatic explosive found in the soil and ground water, was investigated using Pseudomonas aeruginosa in in vitroexperiments. Biodegradable abilitiy of this bacteria was performed with 50 and 75 mg L−1 TNT concentrations in a defined liquid medium for 96 h time period. Treatment of TNT in supernatant samples taken at 0, 6, 12, 24, 48, 72 and 96 h from agitated vessels was followed by reverse-phase high-performance liquid chromatography (HPLC). In cultures supplemented with 50 and 75 mgL−1 TNT, after 96 h of incubation 46% and 59% reduction were detected respectively. Two metabolites as degradation intermediates with nitrite release into the medium, 2,4-dinitrotoluene (2,4-DNT) and 4-aminodinitrotoluene... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas sp; Biotransformation; Nitroaromatic explosives; TNT. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000100103 |
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| Costa,Siddhartha Georges Valadares Almeida de Oliveira; Nitschke,Márcia; Contiero,Jonas. |
| O presente trabalho visou a seleção de microrganismos com capacidade de produzir biotensoativos a partir de resíduos de óleos e gorduras gerados em restaurantes e indústrias alimentícias. Borra de soja, gordura de frango, gordura vegetal hidrogenada e óleo de soja usado em frituras foram estudados como fonte de carbono. Os isolados LMI 6c e LMI 7a, ambos pertencentes ao gênero Pseudomonas, foram selecionados como potenciais produtores de biotensoativos. Dentre os resíduos propostos, a borra de soja foi considerada o melhor substrato, gerando 9,69 g.L-1 de ramnolipídios e uma tensão superficial de 31 mN/m. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biossurfatantes; Biotensoativos; Ramnolipídios; Pseudomonas sp; Resíduos oleosos. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612008000100007 |
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| ANTUNES,JADSON EMANUEL L.; FREITAS,ANA DOLORES S. DE; OLIVEIRA,LOUISE M.S.; LYRA,MARIA DO CARMO C.P. DE; FONSECA,MANOEL A.C.; SANTOS,CAROLINA E.R.S.; OLIVEIRA,JOSÉ DE PAULA; ARAÚJO,ADEMIR SÉRGIO F. DE; FIGUEIREDO,MÁRCIA V.B.. |
| Abstract: The growing need for the use of clean energy has led society to seek alternatives to fossil fuels in order to less pollute the environment. Sugarcane has been known to produce enough biomass and to have associative microorganisms, such as plant growth-promoting bacteria (PGPB), which have the potential to improve the yield of crops. The objective of this study is to evaluate the efficiency and the isotopic dilution of 15N of microbial inoculants containing endophytic diazotrophic bacteria, individually inoculated and in mixture, on productivity, technological quality and biological nitrogen fixation (BNF) of sugarcane variety RB92579. The experiment was conducted for three consecutive years, comprising different crop cycles, in a completely... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacillus megaterium; Herbaspirillum seropecicae; Microbial inoculant; Natural abundance of 15N; Pseudomonas sp. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700863 |
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