Detalhes bibliográficos
| Ano de defesa: |
2015 |
| Autor(a) principal: |
Almeida-Rotta, Anna Paula Santos
 |
| Orientador(a): |
Vieira, José Daniel Gonçalves
|
| Banca de defesa: |
Vieira, José Daniel Gonçalves,
Silva, Daniela de Melo e,
Souza, Keili Maria Cardoso de |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Ciências Ambientais (PRPG)
|
| Departamento: |
Pró-Reitoria de Pós-graduação (PRPG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/5331
|
Resumo: |
In recent decades, the growth of industrial activity and agriculture has been responsible for environmental contamination due to the presence of organic and inorganic substances. Phenol and its derivatives are an important class of environmental contaminants by their presence in many industrial effluents. The seeking of biological alternatives to mitigate the environmental pollution has motivated researches to find microorganisms that combine the capacity to degrade phenol with a sustainable focus. Therefore, bacteras capable of degrading xenobiotics are been used in soil, sediment and water treatment. This study has aimed to evaluate the biodegradation of phenol by bacterial isolates isolated from two Brazilian biomes (Cerrado Goiano and Mangrove of Guarapary, ES), whereupon the influence of pre-adaptation of the bacteria was checked, as well as the effects of growth parameters in different concentrations and the tolerance to this chemical compound. One isolated from Cerrado was identified as Staphylococcus aureus (BF 2.5), and the other one as a gram-positive rod (\BF 2.3.2), and the mangrove bacteria were identified as Bacillus circulans (MF-2) and Bacillus sp. (MF-1). All of the isolates consumed phenol in the approximated of 500mg.L-1 when cultivated in liquid Busnell-Hass (BH) medium and 1.500mg.L-1 in Nutrient Agar medium (NA). The consumption of phenol as carbon source by BF-2.5 isolated was 2,78; 4;79 and 0,35% for concentrations of 100, 200 and 300 mg.L-1 of phenol, respectively. The isolated BF-2.3.2 results were 11, 04; 19,13 and 16,02%, respectively. For the mangrove isolated the results were 22,43; 11,52 and 3.33% to 21,54; 20;54 and 28.85% for the MF-1 and MF-2 isolates, respectively in the same phenol concentrations tested. These results suggest a higher phenol consumption capacity of MF-2 isolated from mangrove. |
