Lignosulfonate and elevated pH can enhance enzymatic saccharification of lignocelluloses

ZJ Wang; TQ Lan; Junyong Zhu

doi:10.1186/1754-6834-6-9

Treesearch

Lignosulfonate and elevated pH can enhance enzymatic saccharification of lignocelluloses

Formally Refereed

Authors:

ZJ Wang, TQ Lan, Junyong Zhu

Year:

2013

Type:

Scientific Journal

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.1186/1754-6834-6-9

Source:

Biotechnology for Biofuels 2013, Volume 6, Number 1. 10 p.

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Abstract

Nonspecific (nonproductive) binding (adsorption) of cellulase by lignin has been identified as a key barrier to reduce cellulase loading for economical sugar and biofuel production from lignocellulosic biomass. Sulfite Pretreatment to Overcome Recalcitrance of Lignocelluloses (SPORL) is a relatively new process, but demonstrated robust performance for sugar and biofuel production from woody biomass especially softwoods in terms of yields and energy efficiencies. This study demonstrated the role of lignin sulfonation in enhancing enzymatic saccharification of lignocelluloses – lignosulfonate from SPORL can improve enzymatic hydrolysis of lignocelluloses, contrary to the conventional belief that lignin inhibits enzymatic hydrolysis due to nonspecific binding of cellulase.

Keywords

Enzymatic hydrolysis/saccharification, Lignin/lignosulfonate, Nonspecific/nonproductive binding/adsorption, Cellulase enzymes, Pretreatment

Citation

Wang, ZJ; Lan, TQ; Zhu, JY. 2013. Lignosulfonate and elevated pH can enhance enzymatic saccharification of lignocelluloses. Biotechnology for Biofuels. 6(1): 10 p.