Microbiología
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Browsing Microbiología by Author "Benavides Fernández, Cesar David"
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Item Revisión sistemática de degradación microbiana de Tereftalato de Polietileno (PET)(Universidad Santiago de Cali, 2021) Benavides Fernández, Cesar David; Guzmán Castillo, Michelly Paola Johana; Carvajal Rodríguez, Lida Vivian; Quijano Pérez, Silvia AndreaThe environmental problems caused by plastic waste, mainly Polyethylene Terephthalate (PET), have increased the levels of environmental pollution. This is due to its high production and inefficient methods of disposal and recycling, affecting the various aquatic and terrestrial ecosystems. Although chemical and physical degradation techniques have been carried out, these have brought negative effects to the environment; therefore, the use of microorganisms has become important in recent years. For this reason, it was carried out a systematic revision of literature that pretended to know the studies and findings made by diverse investigators about PET degradation by wild and genetically modified microorganisms. It was carried out a search of publications in different data bases. Besides, it was elaborated a table where the different wild microorganisms with metabolic potential for the degradation of this polymer and those microorganisms genetically modified for the same purpose are shown. Likewise, the enzymes, proteins and genes used for its elaboration were studied. The wild microorganisms that were most found as PET degraders were some genera of bacteria with 53.8% that correspond to 35 genera, followed by fungi with 44.6% that correspond to 29 genera and a genus of microalgae that corresponds to 1.5%. Among these microorganisms, the most reported genre in fungi was Aspergillus sp., in bacteria it was the genre Bacillus sp. and of microalgae the only genre reported was Spirulina sp. As for the microorganisms genetically modified, it was found that 30 strains of Escherichia coli have been used by means of genetic recombination using mainly the enzyme PETasa.