Journal of Wood Science

, Volume 64, Issue 4, pp 458–462 | Cite as

Characterizations of poplar catkin fibers and their potential for enzymatic hydrolysis

  • Xuexia Zhang
  • Zhiqiang Li
  • Yan Yu
  • Hankun WangEmail author


This study focused on poplar (Populus tomentosa) catkin fiber as a new resource for bioethanol production via enzymatic hydrolysis. The poplar catkin fiber was found to have advantages of relatively high α-cellulose content (44.5%), and low lignin content (2.9%), which indicated the potential for facile enzymatic hydrolysis. The results indicated that the pretreatment improved the cellulose-to-glucose conversion yield (CGCY), the high concentration alkaline pretreatment resulted in highest CGCY (83.3%), followed by dewaxing (31.5%), dilute alkaline (29.8%), and dilute acid pretreatment (24.4%) after enzymatic hydrolysis with cellulase of 15 filter paper units per gram glucan, while the poplar catkin fiber only achieved 18.7% of CGCY by enzymatic hydrolysis after 48 h at 50 °C without any pretreatment.


Poplar catkin fiber Enzymatic hydrolysis Dilute acid pretreatment Alkali pretreatment Dewaxing pretreatment 



We gratefully acknowledge funding for this project by National Science Foundation of China (31400519) and the Basic Scientific Research Funds of International Center for Bamboo and Rattan (1632016007).


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Copyright information

© The Japan Wood Research Society 2018

Authors and Affiliations

  • Xuexia Zhang
    • 1
    • 2
  • Zhiqiang Li
    • 1
    • 2
  • Yan Yu
    • 1
    • 2
  • Hankun Wang
    • 1
    • 2
    Email author
  1. 1.Department of BiomaterialsInternational Center for Bamboo and RattanBeijingChina
  2. 2.Key Laboratory of Bamboo and Rattan Science and TechnologyState Forestry Administration and Beijing Co-builtBeijingChina

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