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Hybrid thermochemical processing: fermentation of pyrolysis-derived bio-oil

  • Laura R. JarboeEmail author
  • Zhiyou Wen
  • DongWon Choi
  • Robert C. Brown
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Abstract

Thermochemical processing of biomass by fast pyrolysis provides a nonenzymatic route for depolymerization of biomass into sugars that can be used for the biological production of fuels and chemicals. Fermentative utilization of this bio-oil faces two formidable challenges. First is the fact that most bio-oil-associated sugars are present in the anhydrous form. Metabolic engineering has enabled utilization of the main anhydrosugar, levoglucosan, in workhorse biocatalysts. The second challenge is the fact that bio-oil is rich in microbial inhibitors. Collection of bio-oil in distinct fractions, detoxification of bio-oil prior to fermentation, and increased robustness of the biocatalyst have all proven effective methods for addressing this inhibition.

Keywords

Levoglucosan Bio-oil Ethanol Lipids Inhibition Toxicity Furfural Acetic acid 

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Laura R. Jarboe
    • 1
    Email author
  • Zhiyou Wen
    • 2
  • DongWon Choi
    • 3
  • Robert C. Brown
    • 4
  1. 1.Chemical and Biological EngineeringIowa State UniversityAmesUSA
  2. 2.Food Science and Human NutritionIowa State UniversityAmesUSA
  3. 3.Biological and Environmental SciencesTexas A&M University—CommerceCommerceUSA
  4. 4.Mechanical EngineeringIowa State UniversityAmesUSA

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