Abstract
Four different pretreatment technologies were applied to two Populus natural variants and the effects of each pretreatment on glucose release were compared. Physicochemical properties of pretreated biomass were analyzed by attenuated total reflection Fourier transform infrared spectroscopy, gel permeation chromatography, and cross polarization/magic angle spinning carbon-13 nuclear magnetic resonance techniques. The results revealed that hemicellulose and lignin were removed to different extents during various pretreatments. The degree of polymerization of cellulose was decreased in the order of alkali > hydrothermal > organosolv > dilute acid pretreatment. Cellulose crystallinity index was slightly increased after each pretreatment. The results also demonstrated that organosolv pretreatment resulted in the highest glucose yield. Among the tested properties of Populus, degree of polymerization of cellulose was negatively correlated with glucose release, whereas hemicellulose and lignin removal, and cellulose accessibility were positively associated with glucose release from the two Populus natural variants.
| Original language | English |
|---|---|
| Pages (from-to) | 75-81 |
| Number of pages | 7 |
| Journal | Bioresource Technology |
| Volume | 265 |
| DOIs | |
| State | Published - Oct 2018 |
Bibliographical note
Publisher Copyright:© 2018 Elsevier Ltd
Funding
This work was partially supported by the BioEnergy Science Center and the Center for Bioenergy Innovation, both are U.S. Department of Energy Research Centers supported by the Office of Biological and Environmental Research in the DOE Office of Science. LY and HY are also grateful for the support of National Natural Science Foundation of China (No. 31500496 ), China Scholarship Council ( 2011842330 , 201508420257 ), key project of Hubei Provincial Department of Education (NO. D20161402 ) and Foundation (No. 201611B01) of Hubei Provincial Key Laboratory of Green Materials for Light Industry. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). The views and opinions of the authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights.
| Funders | Funder number |
|---|---|
| BioEnergy Science Center | |
| U.S. Department of Energy | |
| Office of Science | |
| Biological and Environmental Research | |
| Hubei Provincial Department of Education | |
| Center for Bioenergy Innovation | |
| National Natural Science Foundation of China | 31500496 |
| China Scholarship Council | 2011842330, 201508420257 |
Keywords
- Biomass recalcitrance
- Cellulose accessibility
- Degree of polymerization of cellulose
- Hemicellulose and lignin removal
- Populus natural variants
- Pretreatment
