16. Production of Lactic Acid and Polylactic Acid for Industrial Applications

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

Published Online: 12 JUL 2013

DOI: 10.1002/9781118642047.ch16

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

Thongchul, N. (2013) Production of Lactic Acid and Polylactic Acid for Industrial Applications, 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.ch16

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:

  • azeotropic dehydrative condensation;
  • bacterial fermentation;
  • fungal fermentation;
  • lactic acid;
  • polylactic acid (PLA);
  • ring opening polymerization (ROP)

Summary

Lactic acid has long been widely used in food applications, pharmaceutical products, and industrial processes. One of its derivatives, polylactic acid (PLA), has been of commercial interest in recent years due to the concern of biodegradability and zero carbon emission. There are two groups of native microorganisms (lactic acid bacteria and filamentous fungi Rhizopus) that can be used to produce lactic acid. Batch fermentation is still the most commonly used process in industrial lactic acid production. Reactive extraction, adsorption, and esterification-reactive distillation are the three techniques which were widely developed recently and show high potential for commercial use in production of technical grade lactic acid. The chapter finally discusses the polylactic acid (PLA) synthesis via ring opening polymerization (ROP) and azeotropic dehydrative condensation.