Microstructure Properties and Cellulase Hydrolysis Efficiency of Hybrid Pennisetum with [Amim]Cl Pretreatment

Shengdan Wang; Jiachuan Chen; Guihua Yang; Kefu Chen; Rendang Yang; Jinsong Zeng

doi:10.15376/biores.12.1.1031-1040

BioResources (Dec 2016)

Microstructure Properties and Cellulase Hydrolysis Efficiency of Hybrid Pennisetum with [Amim]Cl Pretreatment

Shengdan Wang,
Jiachuan Chen,
Guihua Yang,
Kefu Chen,
Rendang Yang,
Jinsong Zeng

Affiliations

Shengdan Wang: South China University of Technology; China
Jiachuan Chen: Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qi Lu University of Technology, Jinan, 250353, China; China
Guihua Yang: Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qi Lu University of Technology, Jinan, 250353, China; China
Kefu Chen: South China University of Technology; China
Rendang Yang: State Key Laboratory of Pulp and Paper Engineering, Plant micro/nano fiber research center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China; China
Jinsong Zeng: State Key Laboratory of Pulp and Paper Engineering, Plant micro/nano fiber research center, School of Light Industry and Engineering, South China University of Technology, Guangzhou, 510640, China; China

DOI: https://doi.org/10.15376/biores.12.1.1031-1040
Journal volume & issue: Vol. 12, no. 1
pp. 1031 – 1040

Abstract

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The complex microstructure of lignocellulosic biomass restricts its conversion into bio-ethanol. In this study, the effects of an ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl) pretreatment on the microstructure properties and cellulase hydrolysis efficiency of hybrid Pennisetum (P. americanum × P. purpureum, lignocellulosic biomass) were investigated. After the [Amim]Cl pretreatment, the bonds of lignin-carbohydrate complex (LCC) and C=O in xylan were destroyed and the content of inter-molecular H-bonds O(6)H…O(3’) decreased by 47.2%, while the content of intra-molecular H-bonds of O(2)H…O(6) and O(3)H…O(5) increased by 9.5% and 47.0%, respectively. The crystallinity and the crystallite size decreased by 20.8% and 42.22%, respectively, and the cellulose crystalline structure changed from cellulose crystalline I to cellulose crystalline II. The specific surface area increased from 0.15 to 10.11 m2/g after the [Amim]Cl pretreatment. The glucose recovery increased by 10.3 times after being pretreated with [Amim]Cl, compared with the unpretreated sample.

Hybrid Pennisetum; Microstructure; Pretreatment; [Amim]Cl; Enzymatic hydrolysis

Published in BioResources

ISSN: 1930-2126 (Online)
Publisher: North Carolina State University
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology
Website: https://bioresources.cnr.ncsu.edu/

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