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Optimizing Ammonia Pressurization/Depressurization Processing Conditions to Enhance Enzymatic Susceptibility of Dwarf Elephant Grass

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Twenty-First Symposium on Biotechnology for Fuels and Chemicals

Part of the book series: Applied Biochemistry and Biotechnology ((ABAB))

Abstract

An ammonia pressurization/depressurization process was investigated to evaluate the potential of producing reducing sugars from dwarf elephant grass, a warm-season forage. Moisture, temperature, and ammonia loading affected sugar yield (p <; 0.0001). At optimal conditions, ammonia processing solubilized 50.9% of the hemicellulose and raised the sugar yield (percentage of theoretical) from 18 to 83%. Glucose and xylose production were increased 3.2- and 8.2-fold, respectively. The mild processing conditions of the ammonia treatment (90–100°C, 5 min), the low enzyme loading (2 international filter paper units/g), and the short hydrolysis time (24 h), greatly enhance the potential of using forages to produce sugars valuable for several applications.

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Author information

Authors and Affiliations

  1. Food Laboratory, Department of Chemistry, Science Faculty, University of Zulia, Grano de Oro, Módulo, Maracaibo, Venezuela

    Alexis Ferrer & Betzabé Sulbarán-de-Ferrer

  2. Department of Animal Science, Texas A&M University, 101 Kleberg Center, College Station, TX, 77843-2472, USA

    Floyd M. Byers

  3. Department of Chemical Engineering, Michigan State University, A 202 Engineering Building, East Lansing, MI, 48824-1226, USA

    Bruce E. Dale

  4. University of Zulia, Av. Coajira, Maracaibo, Venezuela

    Cateryna Aiello (Engineering Faculty)

Authors
  1. Alexis Ferrer
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  2. Floyd M. Byers
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  3. Betzabé Sulbarán-de-Ferrer
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  4. Bruce E. Dale
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  5. Cateryna Aiello
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Corresponding author

Correspondence to Alexis Ferrer .

Editor information

Editors and Affiliations

  1. National Renewable Energy Laboratory, USA

    Mark Finkelstein

  2. Oak Ridge National Laboratory, USA

    Brian H. Davison

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© 2000 Springer Science+Business Media New York

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Ferrer, A., Byers, F.M., Sulbarán-de-Ferrer, B., Dale, B.E., Aiello, C. (2000). Optimizing Ammonia Pressurization/Depressurization Processing Conditions to Enhance Enzymatic Susceptibility of Dwarf Elephant Grass. In: Finkelstein, M., Davison, B.H. (eds) Twenty-First Symposium on Biotechnology for Fuels and Chemicals. Applied Biochemistry and Biotechnology. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-4612-1392-5_12

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  • DOI: https://doi.org/10.1007/978-1-4612-1392-5_12

  • Publisher Name: Humana Press, Totowa, NJ

  • Print ISBN: 978-1-4612-7128-4

  • Online ISBN: 978-1-4612-1392-5

  • eBook Packages: Springer Book Archive

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