气候变化领域集成服务门户(CCPortal): Deconstruction of biomass enabled by local demixing of cosolvents at cellulose and lignin surfaces

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DOI	10.1073/pnas.1922883117
	Deconstruction of biomass enabled by local demixing of cosolvents at cellulose and lignin surfaces
	Pingali S.V.; Smith M.D.; Liu S.-H.; Rawal T.B.; Pu Y.; Shah R.; Evans B.R.; Urban V.S.; Davison B.H.; Cai C.M.; Ragauskas A.J.; O'Neill H.M.; Smith J.C.; Petridis L.
发表日期	2020
ISSN	0027-8424
起始页码	16776
结束页码	16781
卷号	117 期号:29
英文摘要	A particularly promising approach to deconstructing and fractionating lignocellulosic biomass to produce green renewable fuels and high-value chemicals pretreats the biomass with organic solvents in aqueous solution. Here, neutron scattering and molecular-dynamics simulations reveal the temperature-dependent morphological changes in poplar wood biomass during tetrahydrofuran (THF):water pretreatment and provide a mechanism by which the solvent components drive efficient biomass breakdown. Whereas lignin dissociates over a wide temperature range (>25 °C) cellulose disruption occurs only above 150 °C. Neutron scattering with contrast variation provides direct evidence for the formation of THF-rich nanoclusters (Rg ∼ 0.5 nm) on the nonpolar cellulose surfaces and on hydrophobic lignin, and equivalent water-rich nanoclusters on polar cellulose surfaces. The disassembly of the amphiphilic biomass is thus enabled through the local demixing of highly functional cosolvents, THF and water, which preferentially solvate specific biomass surfaces so as to match the local solute polarity. A multiscale description of the efficiency of THF:water pretreatment is provided: matching polarity at the atomic scale prevents lignin aggregation and disrupts cellulose, leading to improvements in deconstruction at the macroscopic scale. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Biomass; Pretreatment; Solvents
语种	英语
scopus关键词	cellulose; lignin; tetrahydrofuran; bacterial protein; cellulase; furan derivative; lignin; solvent; surfactant; Article; biomass; chemical structure; concentration (parameter); fractionation; hydrophobicity; membrane permeability; molecular dynamics; neutron scattering; particle size; physical chemistry; physical parameters; priority journal; surface property; temperature measurement; biomass; biotechnology; chemistry; enzymology; Gluconacetobacter xylinus; hydrolysis; metabolism; Populus; procedures; wood; Bacterial Proteins; Biomass; Biotechnology; Cellulase; Furans; Gluconacetobacter xylinus; Hydrolysis; Lignin; Populus; Solvents; Surface-Active Agents; Wood
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160255
作者单位	Pingali, S.V., Neutron Scattering Division, Oak Ridge National Laboratory, ORNL, Oak Ridge, TN 37830, United States; Smith, M.D., UT, ORNL, Center for Molecular Biophysics, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States, Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, United States; Liu, S.-H., UT, ORNL, Center for Molecular Biophysics, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States; Rawal, T.B., UT, ORNL, Center for Molecular Biophysics, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States, Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, United States; Pu, Y., Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, United States; Shah, R., Neutron Scattering Division, Oak Ridge National Laboratory, ORNL, Oak Ridge, TN 37830, United States; Evans, B.R., Chemical Sciences Division, Oak Ridge National Laboratory...
推荐引用方式 GB/T 7714	Pingali S.V.,Smith M.D.,Liu S.-H.,et al. Deconstruction of biomass enabled by local demixing of cosolvents at cellulose and lignin surfaces[J],2020,117(29).
APA	Pingali S.V..,Smith M.D..,Liu S.-H..,Rawal T.B..,Pu Y..,...&Petridis L..(2020).Deconstruction of biomass enabled by local demixing of cosolvents at cellulose and lignin surfaces.Proceedings of the National Academy of Sciences of the United States of America,117(29).
MLA	Pingali S.V.,et al."Deconstruction of biomass enabled by local demixing of cosolvents at cellulose and lignin surfaces".Proceedings of the National Academy of Sciences of the United States of America 117.29(2020).