Impact of bleaching on subcritical water- and Formosolv-pretreated tulip tree to enhance enzyme accessibility.

Abstract

A novel method was developed for fractionating cellulose microfibrils from forest residue (tulip tree sawdust) to enhance cellulose digestibility, particularly at minimum enzyme loadings. This method involved three main stages: selective hemicellulose solubilization by subcritical water (SCW) pretreatment, delignification of the SCW-pretreated solids using the Formosolv process, and deformylation/bleaching of the cellulose pulp with alkaline hydrogen peroxide solution. This process produced nearly 98% white cellulose microfibrils with 23-fold higher conversion to glucose as compared to the raw substrate after 72 h of enzymatic hydrolysis. This study showed that cellulose swelling had the greatest effect on the enzymatic hydrolysis efficiency of delignified pulp obtained by the Formosolv process.

DOI: 10.1016/j.biortech.2013.03.069

Cite this paper

@article{Myint2013ImpactOB, title={Impact of bleaching on subcritical water- and Formosolv-pretreated tulip tree to enhance enzyme accessibility.}, author={Aye Aye Myint and Dae Sung Kim and Hun Wook Lee and Junho Yoon and In-gyu Choi and Joon Weon Choi and Youn-Woo Lee}, journal={Bioresource technology}, year={2013}, volume={145}, pages={128-32} }