22. Production of Polyhydroxyalkanoates in Biomass Refining

  1. Shang-Tian Yang1,
  2. Hesham A El-Enshasy2 and
  3. Nuttha Thongchul3
  1. Jian Yu

Published Online: 12 JUL 2013

DOI: 10.1002/9781118642047.ch22

Bioprocessing Technologies in Biorefinery for Sustainable Production of Fuels, Chemicals, and Polymers

Bioprocessing Technologies in Biorefinery for Sustainable Production of Fuels, Chemicals, and Polymers

How to Cite

Yu, J. (2013) Production of Polyhydroxyalkanoates in Biomass Refining, in Bioprocessing Technologies in Biorefinery for Sustainable Production of Fuels, Chemicals, and Polymers (eds S.-T. Yang, H. A. El-Enshasy and N. Thongchul), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9781118642047.ch22

Editor Information

  1. 1

    William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA

  2. 2

    Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), Johor Bahru, Johor, Malaysia

  3. 3

    Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok, Thailand

Publication History

  1. Published Online: 12 JUL 2013

ISBN Information

Print ISBN: 9780470541951

Online ISBN: 9781118642047

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Keywords:

  • biomass refining;
  • hydroxyalkanoic acids (HAs);
  • microbial synthesis;
  • polyester recovery;
  • polyhydroxyalkanoates (PHAs)

Summary

Polyhydroxyalkanoates (PHAs) are a family of biopolyesters synthesized by many bacteria for energy and carbon storage. This chapter reviews the chemical structures of three hydroxyalkanoic acids (HAs). The monomeric hydroxyalkanoates can be roughly divided into two groups, short-chain-length hydroxyalkanoate s (scl-HA) with 3-5 carbons and medium-chain-length hydroxyalkanoates (mcl-HA). The chapter presents the schematic metabolic pathways of PHA biosynthesis from glucose, xylose, and levulinic acid. A general PHA bioprocess consists of three basic operations: biomass treatment, microbial synthesis, and polyester recovery and purification. Two strategies are usually adopted in PHA recovery and purification, polymer solubilization, or non-PHA cell mass (NPCM) dissolution. In advanced biomass refining, the carbohydrates and small organic molecules derived from biomass can be used for coproduction of fuels and PHA bioplastics.