Differences in S/G ratio in natural poplar variants do not predict catalytic depolymerization monomer yields
Name
s41467-019-09986-1.pdf
Description
Published version
Size
848.64 KB
Format
Adobe PDF
Checksum (MD5)
ab93316cd3366e0422a3acf7615f710d
Author(s)
Anderson, Eric M
Stone, Michael L
Katahira, Rui
Reed, Michelle
Muchero, Wellington
Ramirez, Kelsey J
Beckham, Gregg T
Román-Leshkov, Yuriy
Date Issued
2019
Journal
Nature Communications
Publisher
Springer Science and Business Media LLC
Version
Final published version
Abstract
© 2019, The Author(s). 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.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1038/s41467-019-09986-1
