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Microbial degradation of natural and of new synthetic polymers

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1992_Schink_311_316.pdf
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1992

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Janssen, Peter H.
Frings, Joachim

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FEMS Microbiology Reviews. 1992, 103(2/4), pp. 311-316. ISSN 0378-1097. Available under: doi: 10.1016/0378-1097(92)90324-H

Zusammenfassung

In landfills, deposited waste material is usually faced with strictly anoxic conditions. This means that the design of new biodegradable polymers must take into consideration that degradation should be possible especially in the absence of molecular oxygen. Poly-/3-hydroxybutyrate is depolymerized by the anaerobic fermenting bacterium Ilyobacter delafieldii through an extracellular hydrolase. Monomers are degraded inside the cells through classical /3-oxidation. Polyalkanoates containing odd-numbered or branched-chain acid monomers should he degraded in an analogous manner; in most cases the final mineralization of these residues requires special pathways. A comparison of the chemistry of natural polymer biodegradation leads to the conclusion that synthetic biodegradable polymers should be designed in the future to contain linkages which can be cleaved by extracellular hydrolytic enzymes. Recent findings on aerobic and anaerobic bacterial degradation of synthetic polyethers suggest that natural evolution of new depolymerizing enzymes, perhaps from existing hydrolases, could be possible in a reasonable amount of time, provided that the monomers are likely energy sources for abroad variety of microbes.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
570 Biowissenschaften, Biologie

Schlagwörter

Anaerobic bacteria, biodegradation, evolution of pathways, poly-ß-hydroxybutyrate, polyethylene glycol

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ISO 690SCHINK, Bernhard, Peter H. JANSSEN, Joachim FRINGS, 1992. Microbial degradation of natural and of new synthetic polymers. In: FEMS Microbiology Reviews. 1992, 103(2/4), pp. 311-316. ISSN 0378-1097. Available under: doi: 10.1016/0378-1097(92)90324-H
BibTex
@article{Schink1992Micro-8376,
  year={1992},
  doi={10.1016/0378-1097(92)90324-H},
  title={Microbial degradation of natural and of new synthetic polymers},
  number={2/4},
  volume={103},
  issn={0378-1097},
  journal={FEMS Microbiology Reviews},
  pages={311--316},
  author={Schink, Bernhard and Janssen, Peter H. and Frings, Joachim}
}
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