Avaliação da capacidade de degradação de hidrocarbonetos e fenol por isolados bacterianos endofíticos de bambu
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2016
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Resumo
Endophytic bacteria exhibit a wide biotechnological potential, not limited to the plant
growth promotion, and often also described by their bioremediation capacity. These
microorganisms participate from the hydrocarbon degradation and other organic
pollutants, to heavy metals remediation, elevating significantly the efficiency of
phitoremediation systems. The aim of this study was to evaluate qualitatively the
hydrocarbon degradation capacity and phenol tolerance by endophytic bacteria from
bamboo. For the hydrocarbon degradation screening, it was performed tests in
microplates with the microbial cultivation using each one of the following compounds
as a sole carbon source: diesel oil, gasoline, kerosene, burned oil, lubricants
(20W40, 20W50, 5W50 and 15W40). For phenol tolerance analysis, the endophytic
were cultivated in mineral minimum solid medium, using phenol as the sole carbon
source in three concentrations: 50, 100 and 150 mg/L. For the 21 evaluated bacterial
isolates, one isolate (7F) presented the fuel degradation capacity (diesel oil, gasoline
and kerosene), and two isolates (9F and 6F) exhibited partial degradation capacity.
The vegetal oil degradation was observed for three isolates (6F, 7F and 9F) and
partially for the isolate 10F. The degradation for the tested lubricants was observed
partially for one isolate (7F), with the partial degradation for 5W50 and 15W40 oils by
the 8F isolate. Fifteen isolates were tolerant to phenol in all the analyzed
concentrations. The results suggest a potential application of the endophytic bacterial
isolates in bioremediation process.
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Fenol, Hidrocarbonetos, Micro-organismos endofíticos, Endophytic microorganisms, Hydrocarbons, Phenol
Citação
RIBEIRO, Igor Daniel et al. Avaliação da capacidade de degradação de hidrocarbonetos e fenol por isolados bacterianos endofíticos de bambu. Enciclopedia Biosfera, [S. l.], v. 13, n. 23, p. 1386-1397, 2016. DOI: 10.18677/Enciclopedia_Biosfera_2016_123. Disponível em: https://conhecer.org.br/ojs/index.php/biosfera/article/view/1303. Acesso em: 22 nov. 2024.