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Microbial Cometabolism and Polyhydroxyalkanoate Co-polymers.

Subhasree Ray1,2, Vipin Chandra Kalia1,2

  • 1Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India.

Indian Journal of Microbiology
|February 3, 2017
PubMed
Summary
This summary is machine-generated.

Polyhydroxyalkanoates (PHAs) are biodegradable polymers from renewable sources. PHA copolymers, produced using various substrates, offer improved properties over PHB for plastic replacement.

Keywords:
BacillusBiowastesCo-metabolismCo-polymersGram-negativeGram-positivePolyhydroxyalkanoate

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Area of Science:

  • Biotechnology
  • Polymer Science
  • Microbiology

Background:

  • Polyhydroxyalkanoates (PHAs) are natural, biodegradable polymers derived from renewable resources.
  • PHAs present a sustainable alternative to petroleum-based plastics.
  • Bacteria produce PHAs as intracellular storage materials, typically homopolymers like polyhydroxybutyrate (PHB).

Purpose of the Study:

  • To review bacterial candidates for PHA production.
  • To identify substrates for producing valuable PHA copolymers.
  • To explore alternatives to brittle PHB homopolymers.

Main Methods:

  • Review of literature on PHA-producing bacteria.
  • Analysis of substrates used for PHA copolymer synthesis.
  • Identification of bacterial strains capable of co-metabolizing diverse substrates.

Main Results:

  • Numerous bacterial species can synthesize PHAs.
  • Supplementing bacterial feed with volatile fatty acids or biowaste hydrolysates yields PHA copolymers.
  • PHA copolymers exhibit enhanced properties compared to PHB.

Conclusions:

  • PHA copolymers possess high commercial value due to improved material characteristics.
  • Diverse bacterial strains and substrates can be leveraged for PHA copolymer production.
  • PHAs offer a promising route towards sustainable plastic alternatives.