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Enzyme Production of Trichoderma reesei Rut C-30 on Various Lignocellulosic Substrates

  • Chul Seung Shin
  • Joon Pyo Lee
  • Jin Suk Lee
  • Soon Chul Park
Chapter
Part of the Applied Biochemistry and Biotechnology book series (ABAB)

Abstract

Economical production of cellulase enzyme is key for feasible bioethanol production from lignocellulosics using an enzyme-based process. On-site cellulase production can be more feasible with the process of separate hydrolysis and fermentation (SHF) than with simultaneous saccharification and fermentation, since the cost of enzyme is more important and a variety of substrates are available for the SHF process. Cellulase production using various biomass substrates available for SHF, including paper sludge, pretreated wood (steam exploded), and their hydrolysis residues, was investigated in shake flasks and a fermenter for their productivities and titers. Among the newspaper sludge, office paper sludge, and steam-exploded woods treated in various ways, the steam-exploded wood showed the best properties for substrate in cellulase production. The best titer of 4.29 IU/mL was obtained using exploded wood of 2% (w/v) slurry in the shake flask, and the titer with the same substrate was duplicated to about 4.30 IU/mL in a 3.7-L fermenter. Also, the yield of enzyme reached 215 IU/g of substrate or 363 IU/g of cellulose. Despite various pretreatment attempts, newspaper and office paper substrate was inferior to the exploded-wood substrate for cellulase production. However, hydrolysis residues of papers showed quite promising results. The hydrolysis residue of office paper produced 2.48 IU/mL of cellulase in 7 d. Hence, the utilization of hydrolysis residues for cellulase production will be further investigated in the future.

Index Entries

Cellulase production lignocellulosic substrates waste papers steam-exploded wood 

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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Chul Seung Shin
    • 1
  • Joon Pyo Lee
    • 1
  • Jin Suk Lee
    • 1
  • Soon Chul Park
    • 1
  1. 1.Biomass Research Team, New and Renewable Energy DepartmentKorea Institute of Energy ResearchTaejonKorea

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