期刊
CHEMISTRYSELECT
卷 2, 期 12, 页码 3557-3561出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201700735
关键词
biomass; flavonoids; lignin; NMR spectroscopy; tricin
资金
- UT-Battelle, LLC [DE-AC05-00OR22725]
- U.S. Department of Energy (DOE)
- Office of Biological and Environmental Research in the DOE Office of Science
- BioEnergy Science Center (BESC)
Tricin, a flavonoid metabolite, has been recently identified as a component of lignin in select monocot plants. This finding has initiated consideration on updating the lignin biosynthesis pathway. We here report a rapid method of determination of tricin in corn stover lignin, based on P-31 nuclear magnetic resonance (NMR) spectroscopy by phosphitylating with 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphospholane (TMDP). Nine other flavonoids, with similar structure to tricin, have also been examined using the current method. The application of (PNMR)-P-31 enables rapid identification of tricin-like flavonoids in the heterogeneous lignin polymer. The well resolved spectroscopic peaks from these derivatized flavonoids and lignin functional groups provide important information for the determination of flavonoids individually or their association with lignin.
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