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Metabolic profiling of lignans and other secondary metabolites from rapeseed (Brassica napus L.)

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Fang,  Jingjing
Research Group Biosynthesis / NMR, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

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Reichelt,  Michael
Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society;

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Kai,  Marco
Research Group Mass Spectrometry, MPI for Chemical Ecology, Max Planck Society;

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Schneider,  Bernd
Research Group Biosynthesis / NMR, MPI for Chemical Ecology, Max Planck Society;

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Citation

Fang, J., Reichelt, M., Kai, M., & Schneider, B. (2012). Metabolic profiling of lignans and other secondary metabolites from rapeseed (Brassica napus L.). Journal of Agricultural and Food Chemistry, 60, 10523-10529. doi:10.1021/jf303907b.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-0CCC-C
Abstract
A metabolic profiling study was carried out on rapeseed (Brassica napus L.). Eleven glucosinolates were identified by high-performance liquid chromatography (HPLC) coupled with diode array detection (DAD) and mass spectrometry (MS). Additionally, 18 phenolic compounds were profiled from an ethanol extract of rapeseed. Besides two major phenols, sinapine and methyl sinapate, 16 minor phenolic compounds were isolated and identified. Seven of them are new lignans including three (±)-thomasidioic acid derivatives and four (E,E)-dienolignan derivatives. The structures of novel phenolic compounds were elucidated by 1D and 2D nuclear magnetic resonance (NMR) spectroscopy and MS. The analytical data of secondary metabolites in rapeseed winter cultivar “Emerald” and information about purification on a microscale are useful for upcoming studies on tissue-specific localization of these compounds.