Acta Scientific Microbiology (ASMI) (ISSN: 2581-3226)

Research Article Volume 3 Issue 6

Polyester-based Polyurethane Biodegredation with Aspergillus Section Nigry Species

Çelebi G*, Terzi Y, Aldi B and Haliki-Uztan A

Department of Basic and Industrial Mıcrobiology, Ege University Graduate School of Natural and Applied Sciences, Bornova, Turkey

*Corresponding Author: Çelebi G, Department of Basic and Industrial Mıcrobiology, Ege University Graduate School of Natural and Applied Sciences, Bornova, Turkey.

Received: April 02, 2020; Published: May 08, 2020



  Polyurethanes are a group of heteropolymers, they are widely used in many areas of modern life due to their versatility and durability and they have a wide application area of plastic. The accumulation of plastic waste in the environment causes large-scale pollution with long-term effects, making plastic waste management expensive and problematic. However, the disposal of polyester polyurethane wastes makes biodegradation studies important because of their slow recycling processes and their destruction can create toxic compounds. Studies conducted to date have focused on bacteria and many reports on bacterial biodegradation have been published, but it has been discovered that the main microorganisms responsible for biodegradation are fungi. Therefore, the need for the investigation of fungal communities in PU biodegradation continues. Recently published reports draw attention to the new niger group Aspergillus with biodegradation capacity such as Aspergillus tubingensis. In this study, 10 Aspergillus section nigri members were isolated from soil contaminated with plastic waste, were determined by phenotypic and molecular methods and biodegradation was carried out in 3 stages. The results were confirmed by SEM micrograph and ATR-FTIR spectroscopy and visible physical changes. Thanks to our study, it is aimed to study the details of biodegradation of polyester polyurethanes, which constitute a significant part of the plastic waste amount, thanks to Aspergillus section nigri group molds in nature and to be a data for future research.

Keywords: Polyurethane Biodegredation; Aspergillus nigri; Aspergillus tubingensis



  1. Cregut M., et al. “New insights into polyurethane biodegradation and realistic prospects for the development of a sustainable waste recycling process”. Biotechnology Advances 8 (2013): 1634-1647.
  2. Howard GT. “Polyurethane biodegradation”. Microbial degradation of xenobiotics, 14. Heidelberg Dordrecht London (2012): 371-394.
  3. Cosgrove L., et al. “Fungal Communities Associated with Degradation of Polyester Polyurethane in Soil”. Applied and Environmental Microbiology18 (2007): 5817-5824.
  4. Barratt SR., et al. “Fungi are the predominant micro-organisms responsible for degradation of soil-buried polyester polyurethane over a range of soil water holding capacities”. Journal of Applied Microbiology 1 (2003): 78-85.
  5. Crabbe JR., et al. “Biodegredation of colloidal ester-based polyurethane polyurethane by soil fungi”. International Biodeterioration and Biodegradation2 (1994): 103-113.
  6. Meijer M., et al. “Growth and hydrolase profiles can be used as characteristics to distinguish Aspergillus niger and other black aspergilli”. Studies in Mycology1 (2011): 19-30.
  7. Denning DW., et al. “Temperature-dependent expression of elastase in Aspergillus species”. Journal of Medical and Veterinary Mycology6 (1993): 455-458.
  8. Samson RA., et al. “Phylogeny, identification and nomenclature of the genus Aspergillus”. Studies in Mycology 78 (2014): 141-173.
  9. Yoltaş A. “Çeşitli Kaynaklardan İzole Edilen Aspergillus Sectıon Nıgrı Türlerinin Fenotipik ve Moleküler Biyolojik Yöntemlerle Karakterizasyonu”. Doktora tezi, Ege Üniversitesi Biyoloji Anabilim Dalı (2017): 272.
  10. Liu D., et al. “Rapid Mini-Preparation of Fungal DNA for PCR”. Journal of Clinical Microbiology1 (2000): 471.
  11. Abacı Ö. “Protez Taşıyan Bireylerde Tükürük ve Mukoza Örneklerinde Candida albicans Taranması ve Moleküler Yöntemler ile Tiplendirilmesi”. Doktora Tezi, Ege Üniversitesi, Fen bilimleri Enstitüsü, Bornova-İzmir (2009).
  13. Darby RT and Kaplan AM. “Fungal susceptibility of polyurethanes”. Journal of Applied Microbiology6 (1968): 900-905.
  14. Loredo-Trevino A., et al. “Microbial Enzymes Involved in Polyurethane Biodegradation: A Review”. Journal of Polymers and the Environment 20 (2011): 258-265.
  15. Alvarez-Barragan J., et al. “Biodegradative Activities of Selected Environmental Fungi on a Polyester Polyurethane Varnish and Polyether Polyurethane Foams”. Applied and Environmental Microbiology 82 (2016): 5225-5235.
  16. Khan S., et al. “Biodegradation of polyester polyurethane by Aspergillus tubingensis”. Environmental Pollution 225 (2017): 469-480.
  17. Akutsu-Shıgeno Y., et al. “Purification and Properties of a Polyester Polyurethane-Degrading Enzyme from Comamonas acidovorans TB-35”. Applied Environmental Microbiology1 (1998): 62-67.


Citation: Celebi G., et al. “Polyester-based Polyurethane Biodegredation with Aspergillus Section Nigry Species".Acta Scientific Microbiology 3.6 (2020): 23-33.

Indexed In

News and Events

  • Certification for Review
    Acta Scientific certifies the Editors/reviewers for their review done towards the assigned articles of the respective journals.
  • Submission Timeline for Upcoming Issue
    The last date for submission of articles for regular Issues is December 15, 2020.
  • Publication Certificate
    Authors will be issued a "Publication Certificate" as a mark of appreciation for publishing their work.
  • Best Article of the Issue
    The Editors will elect one Best Article after each issue release. The authors of this article will be provided with a certificate of “Best Article of the Issue”.
  • Welcoming Article Submission
    Acta Scientific delightfully welcomes active researchers for submission of articles towards the upcoming issue of respective journals.
  • Contact US