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- W4243399484 abstract "Rationale We report the top-down lignomics analysis of the virgin released lignin (VRL) extracted from French pine wood by using atmospheric pressure photoionization quadrupole time-of-flight mass spectrometry (APPI-QqTOF-MS) and low-energy collision-induced dissociation tandem mass spectrometry (CID-MS/MS). Methods We used APPI-QqTOF-MS (positive ion mode) for the analysis of the complex mixture of VRL oligomers extracted from French pine wood. Some of the major precursor ions were fished out from the complex VRL oligomeric mixture and subjected to low-energy CID-MS/MS analyses. Results Fourteen novel lignin-carbohydrate complexes (LCCs) were identified using APPI-QqTOF-MS/MS of the very complex mixture of virgin released lignins (VRLs), directly extracted from French pine wood without any kind of purification. The low-energy CID-MS/MS analyses allowed us to establish the fragmentation patterns of the precursor ions and to identify the complex structures of the identified LCC molecules. These novel identified series of LCCs were composed of one or two carbohydrate rings to which one, two, or three lignin units were covalently attached. In addition to the fourteen LCCs, acetyl eugenol was identified in the French pine VRL sample. The identification of acetyl eugenol indicates possible lignin degradation and modification (acetylation) during the mild extraction method developed by the Compagnie Industrielle de la Matiere Vegetale (CIMV). Conclusions The top-down lignomics analysis of the French pine VRLs using APPI-QqTOF-MS and low energy CID-MS/MS allowed us to identify acetylated eugenol and a novel series of fourteen LCCs. These series of LCCs provide evidence that lignins are covalently linked to carbohydrates in the native wood network and act as cross-linkers between cellulose and hemicellulose components of wood." @default.
- W4243399484 created "2022-05-12" @default.
- W4243399484 date "2020-07-30" @default.
- W4243399484 modified "2023-09-27" @default.
- W4243399484 title "Decision letter for Top‐down lignomics analysis of the French pine lignin by atmospheric pressure photoionization quadrupole time‐of‐flight tandem mass spectrometry: Identification of a novel series of lignin‐carbohydrate complexes" @default.
- W4243399484 doi "https://doi.org/10.1002/rcm.8910/v2/decision1" @default.
- W4243399484 hasPublicationYear "2020" @default.
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