Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3389/fmicb.2020.00404
Lizenz creative commons licence
Titel (primär) Towards biorecycling: Isolation of a soil bacterium that grows on a polyurethane oligomer and monomer
Autor Cárdenas Espinosa, M.J.; Colina Blanco, A.; Schmidgall, T.; Atanasoff-Kardjalieff, A.K.; Kappelmeyer, U. ORCID logo ; Tischler, D.; Pieper, D.H.; Heipieper, H.J.; Eberlein, C.
Journal / Serie Frontiers in Microbiology
Erscheinungsjahr 2020
Department UBT
Band/Volume 11
Seite von art. 404
Sprache englisch
Keywords Plastic; Biorecycling; Pseudomonas; polyurethane; Diaminotoluene; Aromatics degradation; Aromatic diamines
Abstract The fate of plastic waste and a sustainable use of synthetic polymers is one of the major challenges of the twenty first century. Waste valorization strategies can contribute to the solution of this problem. Besides chemical recycling, biological degradation could be a promising tool. Among the high diversity of synthetic polymers, polyurethanes are widely used as foams and insulation materials. In order to examine bacterial biodegradability of polyurethanes, a soil bacterium was isolated from a site rich in brittle plastic waste. The strain, identified as Pseudomonas sp. by 16S rRNA gene sequencing and membrane fatty acid profile, was able to grow on a PU-diol solution, a polyurethane oligomer, as the sole source of carbon and energy. In addition, the strain was able to use 2,4-diaminotoluene, a common precursor and putative degradation intermediate of polyurethanes, respectively, as sole source of energy, carbon, and nitrogen. Whole genome sequencing of the strain revealed the presence of numerus catabolic genes for aromatic compounds. Growth on potential intermediates of 2,4-diaminotoluene degradation, other aromatic growth substrates and a comparison with a protein data base of oxygenases present in the genome, led to the proposal of a degradation pathway.
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Cárdenas Espinosa, M.J., Colina Blanco, A., Schmidgall, T., Atanasoff-Kardjalieff, A.K., Kappelmeyer, U., Tischler, D., Pieper, D.H., Heipieper, H.J., Eberlein, C. (2020):
Towards biorecycling: Isolation of a soil bacterium that grows on a polyurethane oligomer and monomer
Front. Microbiol. 11 , art. 404