Bioprocess and Biosystems Engineering

, Volume 41, Issue 8, pp 1133–1142 | Cite as

Enhancing enzyme-aided production of fermentable sugars from poplar pulp in the presence of non-ionic surfactants

  • A. Alhammad
  • P. Adewale
  • M. Kuttiraja
  • L. P. ChristopherEmail author
Research Paper


Addition of surfactants to enzymatic hydrolysis has been reported to enhance the hydrolytic potential of enzymes in the bioconversion of lignocellulosic biomass to fermentable sugars. The objective of this investigation was to evaluate the effects of four non-ionic surfactants (PEG4000, PEG8000, TitronX-100, and Tween80) on the efficiency of enzymatic hydrolysis of steam-pretreated poplar using a commercial cellulase preparation (Cellic® CTec2). Statistical discriminant analysis at four variable factors (surfactant type, surfactant concentration, hydrolysis time, and substrate consistency) revealed that enzymatic hydrolysis was significantly enhanced in the presence of PEG4000, with 19.2% increase in glucose yield over control without surfactant, whereas ANOVA test indicated substrate consistency and hydrolysis time as the most significant factors (P < 0.05). Hydrolysis of poplar pulp at 5% w/w pulp consistency with CTec2 in presence of 1% w/w PEG4000 produced the highest glucose yield of 58.5% after 96 h reaction time.


Enzymatic hydrolysis Cellulase Poplar pulp Non-ionic surfactants Fermentable sugars Discriminant analysis 



Financial support by the Biorefining Research Institute at Lakehead University is gratefully acknowledged.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • A. Alhammad
    • 1
  • P. Adewale
    • 1
  • M. Kuttiraja
    • 1
  • L. P. Christopher
    • 1
    Email author
  1. 1.Biorefining Research InstituteLakehead UniversityThunder BayCanada

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