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Differences in S/G ratio in natural poplar variants do not predict catalytic depolymerization monomer yields

Author

Listed:
  • Eric M. Anderson

    (Massachusetts Institute of Technology)

  • Michael L. Stone

    (Massachusetts Institute of Technology)

  • Rui Katahira

    (National Renewable Energy Laboratory)

  • Michelle Reed

    (National Renewable Energy Laboratory)

  • Wellington Muchero

    (Oak Ridge National Laboratory
    Oak Ridge National Laboratory)

  • Kelsey J. Ramirez

    (National Renewable Energy Laboratory)

  • Gregg T. Beckham

    (National Renewable Energy Laboratory
    Oak Ridge National Laboratory)

  • Yuriy Román-Leshkov

    (Massachusetts Institute of Technology)

Abstract

The ratio of syringyl (S) and guaiacyl (G) units in lignin has been regarded as a major factor in determining the maximum monomer yield from lignin depolymerization. This limit arises from the notion that G units are prone to C-C bond formation during lignin biosynthesis, resulting in less ether linkages that generate monomers. This study uses reductive catalytic fractionation (RCF) in flow-through reactors as an analytical tool to depolymerize lignin in poplar with naturally varying S/G ratios, and directly challenges the common conception that the S/G ratio predicts monomer yields. Rather, this work suggests that the plant controls C-O and C-C bond content by regulating monomer transport during lignin biosynthesis. Overall, our results indicate that additional factors beyond the monomeric composition of native lignin are important in developing a fundamental understanding of lignin biosynthesis.

Suggested Citation

  • Eric M. Anderson & Michael L. Stone & Rui Katahira & Michelle Reed & Wellington Muchero & Kelsey J. Ramirez & Gregg T. Beckham & Yuriy Román-Leshkov, 2019. "Differences in S/G ratio in natural poplar variants do not predict catalytic depolymerization monomer yields," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09986-1
    DOI: 10.1038/s41467-019-09986-1
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    Cited by:

    1. Cao, Yang & He, Mingjing & Dutta, Shanta & Luo, Gang & Zhang, Shicheng & Tsang, Daniel C.W., 2021. "Hydrothermal carbonization and liquefaction for sustainable production of hydrochar and aromatics," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    2. Zhongyang Luo & Qian Qian & Haoran Sun & Qi Wei & Jinsong Zhou & Kaige Wang, 2022. "Lignin-First Biorefinery for Converting Lignocellulosic Biomass into Fuels and Chemicals," Energies, MDPI, vol. 16(1), pages 1-25, December.
    3. Xianyuan Wu & Maxim V. Galkin & Tobias Stern & Zhuohua Sun & Katalin Barta, 2022. "Fully lignocellulose-based PET analogues for the circular economy," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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