Bacterial Pathways for Pollutants Degradation

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Microbial Biotechnology".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 2150

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Guest Editor
Regional Microbiological Center, Belgorod National Research University, 308015 Belgorod, Russia
Interests: microbiology and biochemistry of microorganisms; investigation of persistent pollutants degradation enzymes; bacterial pathways for pollutants degradation; stress impacts at bacteria; actinobacteria; xenobiotics; degradation; enzymes; protein purification; function; biodegradation pathways; intermediates; identification; biodegradation genes; bacterial resting forms
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Guest Editor
Federal Research Center “Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences”, Institute of Biochemistry and Physiology of Microorganisms, 142290 Pushchino, Russia
Interests: microbial ecology; physiology of microorganisms; microscopy; bacterial cell ultrastructure; pollutant biodegradation; microbiology and biochemistry of microorganisms

Special Issue Information

Dear Colleagues,

The rate of environmental pollution is constantly increasing, despite the efforts of humanity to develop technologies for its purification and apply technologies that have a small negative effect. A striking example of this is the situation in the oil industry around the world, the situation with microplastics in seawater, the remains of antibiotics and pesticides in soil, water and landfills. Studies have shown that one of the most promising areas for improving the environment is the use of the potential of microorganisms. Over the past decades, thanks to the development of new highly productive methods (NGS, transcriptomics, proteomics, metabolomics, lipidomics) for the analysis of microbial communities and individual isolated microorganisms, new information has been accumulated that sheds light on the pathways of stable pollutants degradation in microorganisms. Data were obtained showing the general foundations of microbial pathways and unique features characteristic of individual isolates. In this issue, we invite all researchers working in the field of microbial degradation to share their knowledge on the pathways of microbial destruction of resistant pollutants. This special issue of the journal "Microorganisms" is dedicated to the achievements obtained in the research and recruitment of new pathways and enzymes in biotechnology. The creation of highly active biological preparations based on microbial biomolecules contributes to the purification and sustainable development of the environment.

Dr. Inna P. Solyanikova
Dr. Valentina N. Polivtseva
Guest Editors

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Keywords

  • microorganisms
  • pollution
  • biodegradation
  • microbial degradation pathways and enzymes

Published Papers (1 paper)

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Research

14 pages, 1844 KiB  
Article
Epsilon-Caprolactam- and Nylon Oligomer-Degrading Bacterium Brevibacterium epidermidis BS3: Characterization and Potential Use in Bioremediation
by Tatiana Z. Esikova, Ekaterina V. Akatova and Inna P. Solyanikova
Microorganisms 2023, 11(2), 373; https://doi.org/10.3390/microorganisms11020373 - 1 Feb 2023
Cited by 1 | Viewed by 1789
Abstract
epsilon-Caprolactam (Caprolactam, CAP), a monomer of the synthetic non-degradable polymer nylon-6, is the major wastewater component in the production of caprolactam and nylon-6. Biological treatment of CAP, using microbes could be a potent alternative to the current waste utilization techniques. This work [...] Read more.
epsilon-Caprolactam (Caprolactam, CAP), a monomer of the synthetic non-degradable polymer nylon-6, is the major wastewater component in the production of caprolactam and nylon-6. Biological treatment of CAP, using microbes could be a potent alternative to the current waste utilization techniques. This work focuses on the characterization and potential use of caprolactam-degrading bacterial strain BS3 isolated from soils polluted by CAP production wastes. The strain was identified as Brevibacterium epidermidis based on the studies of its morphological, physiological, and biochemical properties and 16S rRNA gene sequence analysis. This study is the first to report the ability of Brevibacterium to utilize CAP. Strain BS3 is an alcalo- and halotolerant organism, that grows within a broad range of CAP concentrations, from 0.5 up to 22.0 g/L, optimally at 1.0–2.0 g/L. A caprolactam biodegradation experiment using gas chromatography showed BS3 to degrade 1.0 g/L CAP over 160 h. In contrast to earlier characterized narrow-specific CAP-degrading bacteria, strain BS3 is also capable of utilizing linear nylon oligomers (oligomers of 6-aminohexanoic acid), CAP polymerization by-products, as sole sources of carbon and energy. The broad range of utilized toxic pollutants, the tolerance for high CAP concentrations, as well as the physiological properties of B. epidermidis BS3, determine the prospects of its use for the biological cleanup of CAP and nylon-6 production wastes that contain CAP, 6-aminohexanoic acid, and low molecular weight oligomer fractions. Full article
(This article belongs to the Special Issue Bacterial Pathways for Pollutants Degradation)
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