This article describes the ideal nature of the Catechyl lignin (C-lignin) via a revised compositional characterization of the vanilla seed coat fiber, new features of the C-lignin's reactivity and stability, and successful attempts at converting it to monomers in near-quantitative yields.
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Authors
Li, Yanding
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute; University of Wisconsin-Madison
Shuai, Li
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute; Virginia Tech University
Kim, Hoon
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute; University of Wisconsin-Madison
Hussain Motagamwala, Ali
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute; University of Wisconsin-Madison
Mobley, Justin K.
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute
Yue, Fengxia
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute; University of Wisconsin-Madison
Tobimatsu, Yuki
U.S. Department of Energy Great Lakes Bioenergy Research Center; Wisconsin Energy Institute; University of Wisconsin-Madison; Kyoto University
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This article describes the ideal nature of the Catechyl lignin (C-lignin) via a revised compositional characterization of the vanilla seed coat fiber, new features of the C-lignin's reactivity and stability, and successful attempts at converting it to monomers in near-quantitative yields.
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10 p.
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Abstract: Lignin, a major component of lignocellulosic biomass, is crucial to plant growth and development but is a major impediment to efficient biomass utilization in various processes. Valorizing lignin is increasingly realized as being essential. However, rapid condensation of lignin during acidic extraction leads to the formation of recalcitrant condensed units that, along with similar units and structural heterogeneity in native lignin, drastically limits product yield and selectivity. Catechyl lignin (C-lignin), which is essentially a benzodioxane homopolymer without condensed units, might represent an ideal lignin for valorization, as it circumvents these issues. We discovered that C-lignin is highly acid-resistant. Hydrogenolysis of C-lignin resulted in the cleavage of all benzodioxane structures to produce catechyl-type monomers in near-quantitative yield with a selectivity of 90% to a single monomer.
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Li, Yanding; Shuai, Li; Kim, Hoon; Hussain Motagamwala, Ali; Mobley, Justin K.; Yue, Fengxia et al.An “ideal lignin” facilitates full biomass utilization,
article,
September 28, 2018;
Washington, DC.
(https://digital.library.unt.edu/ark:/67531/metadc1310121/:
accessed March 25, 2023),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT College of Science.
