title: Elucidation of lignin structure by quantitative 2D NMR.
abstract: 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.
authors: Dipartimento di Scienze e Tecnologie Chimiche, Tor Vergata University, Via della Ricerca Scientifica, 00133, Rome, Italy.
authors: Marco
authors: M
authors: Sette
authors: Rainer
authors: R
authors: Wechselberger
authors: Claudia
authors: C
authors: Crestini
mesh_terms: D008031:Lignin / Q000032:analysis / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D015394:Molecular Structure; D028222:Picea / Q000737:chemistry*; D012015:Reference Standards; D015203:Reproducibility of Results; D013997:Time Factors; D014934:Wood / Q000737:chemistry*
chemical_list: D008031:Lignin