Journal article
Advances in modifying lignin structures for largely enhancing high-lignin biomass saccharification
Process biochemistry (1991), Vol.57, pp.175-180
06/2017
Handle:
https://hdl.handle.net/2376/116819
Abstract
[Display omitted]
•Modifying lignin structure overcomes the lignin barrier.•Bionic treatment increases cellulose accessibility.•Modification of lignin monostructure can significantly modify its recalcitrance.•Bionic treatment alters three-monolignin proportion other than lignin level.•Modified lignin exhibited less adsorption capability onto cellulase.
Traditional chemical treatments require high energy and concentrated agents to decrease high-lignin biomass recalcitrance during lignin removal. A low-cost and environment-friendly method via modifying the lignin structure without lignin degradation overcomes lignin barrier in wood-feeding termites. In this study, thermal hydroxyl radicals in the biomimetic system performed in high-lignin cassava stillage residues did not reduce total lignin level but altered the lignin monostructure. The major β-O-4′ remained conserved, whereas hydroxylation and modification of selective intermonomer side-chain linkages occurred in the treated lignin. The treatment can enhance enzymatic saccharification with cellulose conversion of cassava stillage residues at 97%, twice higher than that of the control. In addition, the modified lignin exhibited low invalid adsorption capacity into commercial cellulases, thereby improving the performance of cellulosic feedstock. Modifying the lignin structure, instead of removing lignin, provides new insights for development of novel treatments for high-lignin biomass.
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Details
- Title
- Advances in modifying lignin structures for largely enhancing high-lignin biomass saccharification
- Creators
- Le GaoShulin ChenDongyuan Zhang
- Publication Details
- Process biochemistry (1991), Vol.57, pp.175-180
- Publisher
- Elsevier Ltd
- Identifiers
- 99900583057801842
- Language
- English
- Resource Type
- Journal article