The Effect of Cellulose Crystalline Structure Modification on Glucose Production from Chemical-Composition-Controlled Biomass

The crystalline structure is a biomass recalcitrance factor that hinders chemical or biological access to degrade the plant cell-wall structure. However, controversy persists over whether a ratio of the crystalline region, the crystallinity index, is a critical biomass recalcitrance factor. In this...

Full description

Saved in:
Bibliographic Details
Published in:Sustainability 2023-03, Vol.15 (7), p.5869
Main Authors: Jang, Soo-Kyeong, Jeong, Hanseob, Choi, In-Gyu
Format: Article
Language:English
Subjects:
Alternative energy sources
Biomass
Caustic soda
Cellulase
Cellulose
Chemical composition
Chemical properties
Crystal structure
Crystallinity
Crystals
Decomposition
Dextrose
Efficiency
Eucalyptus
Glucose
Hemicellulose
Laboratories
Lignin
Lignocellulose
Methods
Moisture absorption
Plant biomass
Residues
Sodium
Sodium hydroxide
Structure
Sustainability
Xylem
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The crystalline structure is a biomass recalcitrance factor that hinders chemical or biological access to degrade the plant cell-wall structure. However, controversy persists over whether a ratio of the crystalline region, the crystallinity index, is a critical biomass recalcitrance factor. In this study, an alkaline treatment modified from mercerization was adopted to alleviate the crystalline structure in the xylem of eucalyptus, along with hemicellulose and lignin removal via autohydrolysis and acid–chlorite treatment, respectively. Then, the glucose yield of the treated solid residues was used as a parameter of biomass recalcitrance. The alkaline treatment successfully reduced the crystallinity index, and the maximal reduction ratio was 84.9% when using an 8% sodium hydroxide solution. However, the reduction ratio of the crystallinity index was dependent on the remaining lignin content in the treated solid residues. Additionally, the lignin removal ratio showed critical influence to improve the glucose yield that was even observed in the treated solid residue having a low reduction ratio of the crystallinity index. Consequently, the cellulose crystalline structure is minimally involved with biomass recalcitrance, especially cellulase activity, at least in eucalyptus.
ISSN:2071-1050
2071-1050
DOI:10.3390/su15075869