Obtención de microorganismos en suelos de un bosque de niebla, para la degradación de hidrocarburos aromáticos
Obtaining microorganisms in cloud forest soils for the degradation ofaromatic hydrocarbons
Available online: 2018-11-09 / pages.95-106
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Introduction: The impact of polluting substances, especially those of fossil fuels, on theenvironment is an important issue in the world. The ability of microorganisms to degradethese pollutants has been recently studied and characterized.Keyworks: Genetic characterization; soil pollutants; Lactobacillus; Prevotella;mineralization
Objective: To analyze the ability of groups of microorganisms, obtained from a cloudforest ecosystem in Mexico, to degrade aromatic compounds (benzene, toluene,ethylbenzene and anthracene).
Materials and methods: Microbiome samples were collected in the Sierra Madre del Surin the state of Oaxaca. The microorganisms were isolated and identified by moleculartechniques. Subsequently, the ability of the microorganisms to degrade aromatichydrocarbons in a packed-bed bioreactor was quantitatively evaluated by HPLC-PDAchromatography.
Results and discussion: Fifty groups of microorganisms were collected, cultured andgenetically characterized. In genetic diversity, Lactobacillus, Prevotella and genera of the2 family Acetobacteraceae predominated. In the hydrocarbon biodegradation process, thepollutant concentration decreased 97 % and 91 % mineralization was achieved in less than25 h.
Conclusions: The microorganisms showed significant degrading activity of the aromaticcompounds. Biodiversity in the cloud forest in the Loxicha region is key to ensuringecosystem services, so it is important to undertake explorations to evaluate the use of thesebacterial microbiomes.
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Cruz-Narváez, Y., Rico-Arzate, E., Castro-Arellano, J. J., Noriega-Altamirano, G., Piña-Escobedo, A., Murugesan, S., & García-Mena, J. (2019). Obtaining microorganisms in cloud forest soils for the degradation ofaromatic hydrocarbons. Revista Chapingo Serie Ciencias Forestales y del Ambiente, XXV(1), 95-106. http://dx.doi.org/10.5154/r.rchscfa.2018.06.055