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Milled Wood Lignin: A Linear Oligomer
Abstract
The degree of polymerization (DP) of softwood and hardwood milled wood lignin samples and their branching degrees were quantitatively evaluated by a novel end-group titration approach composed of QQ-HSQC, (31)P NMR, and DFRC coupled with (31)P NMR analysis techniques. The DP of lignin can be calculated when the C9 formula, the amounts of phenolic groups, pinoresinol (β-β), diphenylethane (β-1), and phenolic diphenyl (5-5') lignin subunits have been determined. Data on the degree of polymerization of lignin obtained by NMR techniques were not affected by supramolecular aggregation processes. (31)P NMR analysis coupled with DFRC and QQ-HSQC allowed a detailed evaluation of the occurrence of condensed units in lignin and showed the terminal nature of diphenyl ether and diphenyl subunits. The resulting data unequivocally show that milled wood lignin is a linear oligomer.
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Cited by
Guidelines for performing lignin-first biorefining
Abu-Omar, M. M., Barta, K., Beckham, G. T., Luterbacher, J. S., Ralph, J., Rinaldi, R., Román-Leshkov, Y., Samec, J. S. M., Sels, B. F., & Wang, F. (2021) · Energy & Environmental Science · doi:10.1039/d0ee02870c · Cited by 913
Can laccases catalyze bond cleavage in lignin?
Munk, L., Sitarz, A. K., Kalyani, D. C., Mikkelsen, J. D., & Meyer, A. S. (2015) · Biotechnology Advances · doi:10.1016/j.biotechadv.2014.12.008 · Cited by 395
Lignin-based carbon fibers: Formation, modification and potential applications
Wang, S., Bai, J., Innocent, M. T., Wang, Q., Xiang, H., Tang, J., & Zhu, M. (2022) · Green Energy & Environment · doi:10.1016/j.gee.2021.04.006 · Cited by 280
Molecular-level driving forces in lignocellulosic biomass deconstruction for bioenergy
Petridis, L., & Smith, J. C. (2018) · Nature Reviews Chemistry · doi:10.1038/s41570-018-0050-6 · Cited by 228
Jampa, S., Puente-Urbina, A., Ma, Z., Wongkasemjit, S., Luterbacher, J. S., & van Bokhoven, J. A. (2019) · ACS Sustainable Chemistry & Engineering · doi:10.1021/acssuschemeng.8b05498 · Cited by 45
Metadata
- Authors
- Crestini, C., Melone, F., Sette, M., & Saladino, R.
- Venue
- Biomacromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-10-03
- Volume
- 12
- Issue
- 11
- Pages
- 3928-3935
- ISSN
- 1525-7797 (ISSN-L)
- 1526-4602
- OpenAlex
- W1976454851
- Cited by
- 335
- References
- 0
- FWCI
- 6.20
- Type
- journal article
- Language
- en
- Open access
- closed
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- Crestini, C., Melone, F., Sette, M., & Saladino, R. (2011). Milled Wood Lignin: A Linear Oligomer. Biomacromolecules. https://doi.org/10.1021/bm200948r
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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