Low-chromophore lignin isolation from natural biomass with polyol-based deep eutectic solvents
- Chinese Academy of Forestry, Nanjing (China); Nanjing Forestry University (China)
- Chinese Academy of Forestry, Nanjing (China)
- Nanjing Forestry University (China)
- State Univ. of New York (SUNY), Syracuse, NY (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); University of Tennessee Institute of Agriculture, Knoxville, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
When attempting to obtain light-color lignin from lignocellulosic biomass or industrial lignin, the available options based on chemical or morphological modification suffer from low yield, high cost, and lack of availability at the required scales. In this study, we adopted a polyhydric-alcohol-based deep eutectic solvent (PA-DES) to directly extract light-color lignin from natural biomass, which is even whiter than native cellulolytic enzyme lignin (CEL). The isolated lignin possessed a high recovery yield (97.36%), regular micro-spherical morphology, enriched β-ether linkage of 58/100Ar, low phenolic hydroxyl content of 1.25 mmol g-1, minimal carbonyl content of 0.70 mmol g-1, and less condensed structures, thus yielding a lower content of chromophores. Further, this lignin showed excellent sunscreen effects, which could enhance the SPF of a commercial sunscreen from 15 to 40 with only 5 wt% addition. This study can provide essential guidance for the scale-up production of light-color lignin and obtaining near-complete digestible cellulose for further saccharification.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- National Natural Science Foundation of China; USDOE
- Grant/Contract Number:
- AC05-00OR22725
- Other Award/Contract Number:
- 32371821
32301546
32271974
- OSTI ID:
- 2429805
- Journal Information:
- Green Chemistry, Journal Name: Green Chemistry Journal Issue: 14 Vol. 26; ISSN 1463-9262
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Revealing the relationship between molecular weight of lignin and its color, UV-protecting property
Direct Extraction of Uniform Lignin Microspheres from Bamboo Using a Polyol-Based Deep Eutectic Solvent
Journal Article
·
Sun Nov 13 19:00:00 EST 2022
· International Journal of Biological Macromolecules
·
OSTI ID:1969806
Direct Extraction of Uniform Lignin Microspheres from Bamboo Using a Polyol-Based Deep Eutectic Solvent
Journal Article
·
Tue Jun 27 20:00:00 EDT 2023
· ACS Sustainable Chemistry & Engineering
·
OSTI ID:1997722