Emerging Strategies for Modifying Lignin Chemistry to Enhance Biological Lignin Valorization

Zhao, Zhi‐Min; Liu, Zhi‐Hua; Pu, Yunqiao Joseph; Meng, Xianzhi; Xu, Jifei; Yuan, Joshua S.; Ragauskas, Arthur J.

doi:10.1002/cssc.202001401

Title: Emerging Strategies for Modifying Lignin Chemistry to Enhance Biological Lignin Valorization

Journal Article · Tue Aug 04 00:00:00 EDT 2020 · ChemSusChem

DOI:https://doi.org/10.1002/cssc.202001401· OSTI ID:1784146

Zhao, Zhi‐Min ^[1]; Liu, Zhi‐Hua ^[2];

^[3]; Meng, Xianzhi ^[4]; Xu, Jifei ^[5]; Yuan, Joshua S. ^[2];

^[6]

Inner Mongolia Univ., Hohhot (China); Univ. of Tennessee, Knoxville, TN (United States)
Texas A & M Univ., College Station, TX (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States)
Inner Mongolia Univ., Hohhot (China)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee Institute of Agriculture, Knoxville, TN (United States)

Abstract Biological lignin valorization represents a promising approach contributing to sustainable and economic biorefineries. The low level of valuable lignin‐derived products remains a major challenge hindering the implementation of microbial lignin conversion. Lignin's properties play a significant role in determining the efficiency of lignin bioconversion. To date, despite significant progress in the development of biomass pretreatment, lignin fractionation, and fermentation over the last few decades, little efforts have gone into identifying the ideal lignin substrates for an efficient microbial metabolism. In this Minireview, emerging and state‐of‐the‐art strategies for biomass pretreatment and lignin fractionation are summarized to elaborate their roles in modifying lignin structure for bioconversion. Fermentation strategies aimed at enhancing lignin depolymerization for microbial utilization are systematically reviewed as well. With an improved understanding of the ideal lignin structure elucidated by comprehensive metabolic pathways and/or big data analysis, modifying lignin chemistry could be more directional and effective. Ultimately, together with the progress of fermentation process optimization, biological lignin valorization will become more competitive in biorefineries.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Biological and Environmental Research (BER); National Natural Science Foundation of China (NSFC); Natural Science Foundation of Inner Mongolia; Center for Bioenergy Innovation (CBI); USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC05-00OR22725; 21706136; 2019MS02026; EE0006112; EE0007104; EE0008250

OSTI ID:: 1784146

Alternate ID(s):: OSTI ID: 1786455

Journal Information:: ChemSusChem, Vol. 13, Issue 20; ISSN 1864-5631

Publisher:: ChemPubSoc EuropeCopyright Statement

Country of Publication:: United States

Language:: English

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Fractionation of Industrial Softwood Kraft Lignin: Solvent Selection as a Tool for Tailored Material Properties Passoni, Valeria; Scarica, Carmela; Levi, Marinella ACS Sustainable Chemistry & Engineering, Vol. 4, Issue 4 https://doi.org/10.1021/acssuschemeng.5b01722	journal	February 2016

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