Enzymatic Hydrolysis of Ammonia-Treated Sugar Beet Pulp

  • Brian L. Foster
  • Bruce E. Dale
  • Joy B. Doran-PetersonEmail author
Part of the ABAB Symposium book series (ABAB)


Sugar beet pulp is a carbohydrate-rich coproduct generated by the table sugar industry. Beet pulp has shown promise as a feedstock for ethanol production using enzymes to hydrolyze polymeric carbohydrates and engineered bacteria to ferment sugars to ethanol. In this study, sugar beet pulp underwent an ammonia pressurization depressurization (APD) pretreatment in which the pulp was exploded by the sudden evaporation of ammonia in a reactor vessel. APD was found to substantially increase hydrolysis efficiency of the cellulose component, but when hemicellulose- and pectin-degrading enzymes were added, treated pulp hydrolysis was no better than the untreated control.

Index Entries

Biomass sugar beet pulp enzyme hydrolysis ammonia pretreatment fuel alcohol 


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Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Brian L. Foster
    • 1
  • Bruce E. Dale
    • 2
  • Joy B. Doran-Peterson
    • 1
    Email author
  1. 1.Department of BiologyCentral Michigan UniversityMt. PleasantUSA
  2. 2.Department of Chemical EngineeringMichigan State UniversityEast LansingUSA

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