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| Registros recuperados: 97 | |
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| Sene,Luciane; Converti,Attilio; Secchi,Geslaine Aparecida Ribeiro; Simão,Rita de Cássia Garcia. |
| The world practice of using agrochemicals for long periods, in an indiscriminated and abusive way, has been a concern of the authorities involved in public health and sustainability of the natural resources, as a consequence of environmental contamination. Agrochemicals refer to a broad range of insecticides, fungicides and herbicides, and among them stands out atrazine, a herbicide intensively used in sugarcane, corn and sorghum cultures, among others. Researches have demonstrated that atrazine has toxic effects in algae, aquatic plants, aquatic insects, fishes and mammals. Due to the toxicity and persistence of atrazine in the environment, the search of microbial strains capable of degrading it is fundamental to the development of bioremediation... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrazine; Biodegradation; Bacteria; Fungi; Microbial consortium. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200030 |
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| Reena,; Dhall,Purnima; Kumar,Rita; Kumar,Anil. |
| Present study reports the validation (oxidation) of computationally predicted oxidation of xenobiotic contaminants by commercially available pure laccase from Trametes versicolor. Selected contaminants were predicted as potential targets for laccase oxidation by using in-silico docking tool. The oxidation by laccase was measured by change in absorbance at specific λ max of each compound. Sinapic acid and tyrosine were taken as positive and negative controls, respectively. Oxidation was observed in m-chlorophenol, 2,4 di-chlorophenol, 2,4,6 tri-chlorophenol, captan, atrazine and thiodicarb, except malathion, which showed no activity. It could be speculated that the predicted substrates showing oxidation shared homology at structural and chemical level with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodegradation; In silico screening; Laccase; Xenobiotics. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000500803 |
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| Qin,Wei; Fan,Fuqiang; Zhu,Yi; Huang,Xiaolong; Ding,Aizhong; Liu,Xiang; Dou,Junfeng. |
| Abstract Cellulosimicrobium cellulans CWS2, a novel strain capable of utilizing benzo(a)pyrene (BaP) as the sole carbon and energy source under nitrate-reducing conditions, was isolated from PAH-contaminated soil. Temperature and pH significantly affected BaP biodegradation, and the strain exhibited enhanced biodegradation ability at temperatures above 30 °C and between pH 7 and 10. The highest BaP removal rate (78.8%) was observed in 13 days when the initial BaP concentration was 10 mg/L, and the strain degraded BaP at constant rate even at a higher concentration (50 mg/L). Metal exposure experimental results illustrated that Cd(II) was the only metal ion that significantly inhibited biodegradation of BaP. The addition of 0.5 and 1.0 g/L glucose enhanced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anaerobic; Biodegradation; Benzo(a)pyrene; Cellulosimicrobium cellulans CWS2. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000200258 |
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| Hamada,Mazen; Matar,Ammar; Bashir,Abdallah. |
| Abstract Carbaryl is an important and widely used insecticide that pollutes soil and water systems. Bacteria from the local soil ecosystem of the Gaza Strip capable of utilizing carbaryl as the sole source of carbon and nitrogen were isolated and identified as belonging to Bacillus, Morganella, Pseudomonas, Aeromonas and Corynebacterium genera. Carbaryl biodegradation by Bacillus, Morganella and Corynebacterium isolates was analyzed in minimal liquid media supplemented with carbaryl as the only source of carbon and nitrogen. Bacillus and Morganella exhibited 94.6% and 87.3% carbaryl degradation, respectively, while Corynebacterium showed only moderate carbaryl degradation at 48.8%. These results indicate that bacterial isolates from a local soil ecosystem... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodegradation; Soil bacterial isolates; Carbaryl; TLC. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401087 |
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| Ruegger,Marcelo José Silveira; Tornisielo,Sâmia Maria Tauk; Bononi,Vera Lúcia Ramos; Capelari,Marina. |
| The edible mushroom Oudemansiella canarii (Jungh.) Höhn is common in the Brazilian territory, being found in different biomas, where they colonize several plant species. In this study, the O. canarii cultivation was evaluated in polypropilene bags containing sugar-cane bagasse (200 g) or eucalyptus sawdust (200 g) supplemented with wheat bran (50 g). The composts were sterilized at 121ºC for 1 hour, after cooling they were inoculated with 3 g of spawn and then remained incubated at 25ºC until the basidiomata primordia formation. The mushrooms, harvested after the pilei opening, presented varied sizes reaching 9 cm of diameter and 10 cm of height. The fresh mushrooms presented mild taste and soft consistency. When kept at 4ºC, they maintained good... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oudemansiella canarii; Basidiomycetes; Mushroom; Solid substrates; Biodegradation. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000300009 |
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| Ren,Lei; Fan,Shuanghu; Wang,Junhuan; Ruth,Nahurira; Qiao,Cheng; Jia,Yang; Yan,Yanchun. |
| ABSTRACT Mycobacterium sp. YC-RL4 is capable of utilizing a broad range of phthalic acid esters (PAEs) as sole source of carbon and energy for growth. The preliminary studies demonstrated its high degrading efficiency and good performance during the bioprocess with environmental samples. Here, we present the complete genome of Mycobacterium sp. YC-RL4, which consists of one circular chromosome (5,801,417 bp) and one plasmid (252,568 bp). The genomic analysis and gene annotation were performed and many potential genes responsible for the biodegradation of PAEs were identified from the genome. These results may advance the investigation of bioremediation of PAEs-contaminated environments by strain YC-RL4. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genome Sequence; Mycobacterium sp.; Biodegradation; Phthalic acid esters. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000400607 |
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| Registros recuperados: 97 | |
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