Recent Advances in Characterization of Lignin Polymer by Solution-State Nuclear Magnetic Resonance (NMR) Methodology
Overview
Affiliations
The demand for efficient utilization of biomass induces a detailed analysis of the fundamental chemical structures of biomass, especially the complex structures of lignin polymers, which have long been recognized for their negative impact on biorefinery. Traditionally, it has been attempted to reveal the complicated and heterogeneous structure of lignin by a series of chemical analyses, such as thioacidolysis (TA), nitrobenzene oxidation (NBO), and derivatization followed by reductive cleavage (DFRC). Recent advances in nuclear magnetic resonance (NMR) technology undoubtedly have made solution-state NMR become the most widely used technique in structural characterization of lignin due to its versatility in illustrating structural features and structural transformations of lignin polymers. As one of the most promising diagnostic tools, NMR provides unambiguous evidence for specific structures as well as quantitative structural information. The recent advances in two-dimensional solution-state NMR techniques for structural analysis of lignin in isolated and whole cell wall states (), as well as their applications are reviewed.
Chowdari R, Ganji P, Likozar B Energy Fuels. 2025; 39(6):2943-2985.
PMID: 39967748 PMC: 11831597. DOI: 10.1021/acs.energyfuels.4c05174.
Thermal Condensation of Dehydrogenation Polymer (DHP) with Xylose.
Wang P, Xie J, Peng W, Xie J, An J, Zhang G Polymers (Basel). 2024; 16(22).
PMID: 39599230 PMC: 11597921. DOI: 10.3390/polym16223139.
Study on the Thermal Condensation Mechanism of Dehydrogenated Polymer (DHP) and Glucuronic Acid.
Wang P, Zhang X, Peng W, Chen J, An J, Zhang G Int J Mol Sci. 2024; 25(19).
PMID: 39408871 PMC: 11476454. DOI: 10.3390/ijms251910533.
The role of NMR spectroscopy in lignocellulosic biomass characterisation: A mini review.
Vukovic J, Tisma M Food Chem (Oxf). 2024; 9:100219.
PMID: 39263258 PMC: 11388798. DOI: 10.1016/j.fochms.2024.100219.
Pang S, Wang X, Pu J, Liang C, Yao S, Qin C Polymers (Basel). 2024; 16(10).
PMID: 38794596 PMC: 11124851. DOI: 10.3390/polym16101403.