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Elucidation of Lignin Structure by Quantitative 2D NMR
Author(s) -
Sette Marco,
Wechselberger Rainer,
Crestini Claudia
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201003045
Subject(s) - heteronuclear single quantum coherence spectroscopy , lignin , hardwood , softwood , chemistry , materials science , organic chemistry , nuclear magnetic resonance spectroscopy , botany , biology , composite material
Quick quantitative HSQC (QQ‐HSQC) was applied to quantitative evaluation of different inter‐unit linkages in an array of milled softwood and hardwood and technical lignins by using the guaiacyl C2 and syringyl C2–C6 signals as internal standards. The results were found to be highly reproducible and comparable with earlier literature reports. The advantage of QQ‐HSQC NMR analysis of lignin is contemporary detection and quantification of lignin inter‐unit linkages with a direct, non‐destructive method requiring short acquisition times.