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Title:
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Synergistic benefits from a lignin-first biorefinery of poplar via coupling acesulfamate ionic liquid followed by mild alkaline extraction.
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Authors:
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Xu J; School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. Electronic address: .
Dai L; Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China.
Gui Y; School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
Yuan L; School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
Zhang C; School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
Lei Y; Center for Energy Resources Engineering, Department of Chemistry, Technical University of Denmark, Lyngby 2800, Denmark.
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Source:
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Bioresource technology [Bioresour Technol] 2020 May; Vol. 303, pp. 122888. Date of Electronic Publication: 2020 Jan 23.
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Publication Type:
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Journal Article
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Language:
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English
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Imprint Name(s):
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Original Publication: Barking, Essex, England : New York, N.Y. : Elsevier Applied Science ; Elsevier Science Pub. Co., 1991-
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MeSH Terms:
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Ionic Liquids*
Populus*
Cellulose ; Hydrolysis ; Ions ; Lignin
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Contributed Indexing:
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Keywords: Alkaline pretreatment; Enzymatic hydrolysis; Hemicellulose; Ionic liquid; Lignin-first biorefinery
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Substance Nomenclature:
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0 (Ionic Liquids)
0 (Ions)
9004-34-6 (Cellulose)
9005-53-2 (Lignin)
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Entry Date(s):
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Date Created: 20200207 Date Completed: 20200226 Latest Revision: 20200226
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Update Code:
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20240105
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DOI:
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10.1016/j.biortech.2020.122888
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PMID:
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32028215
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A novel mind-set, termed lignin-first biorefinery, is bewitching to synchronously boost lignin output for entirely lignocellulosic utilization. A lignin-first fractionation, using a food-additive derived ionic liquid (1-ethyl-3-methylimidazolium acesulfamate, emimAce) and mild alkaline pretreatments, was formed for the purposely isolating poplar lignin, whilst delivering a cellulose-rich substrate that can be easily available for enzymatic digestion. The emimAce-driven lignin, alkali-soluble lignin and hemicellulose, and accessible cellulose were sequentially gained. We introduce a lignin-first approach to extract the amorphous fractions, destroy the robust architecture, and reform cellulose-I to II, thereby advancing the cellulose bioconversion from 15.4 to 90.5%. A harvest of 70.7% lignin, 52.1% hemicellulose, and 330.1 mg/g glucose was fulfilled from raw poplar. A structural ''beginning-to-end'' analysis of lignin inferred that emimAce ions are expected to interact with lignin β-aryl-ether due to their aromatic character. It was reasonable to derive benefits from lignin-first technique that can substantially augment the domain of biorefinering.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
