Lignin-Derived Thioacidolysis Dimers [electronic resource] : Reevaluation, New Products, Authentication, and Quantification

Published: Washington, D.C. : United States. Dept. of Energy. Office of Science, 2017.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description: pages 830-835 : digital, PDF file
Additional Creators: University of Wisconsin--Madison, United States. Department of Energy. Office of Science, and United States. Department of Energy. Office of Scientific and Technical Information

Access Online

www.osti.gov

Availability

Finding items...

Restrictions on Access

Free-to-read Unrestricted online access

Summary

Lignin structural studies play an essential role both in understanding the development of plant cell walls and for valorizing lignocellulosics as renewable biomaterials. Dimeric products released by selectively cleaving β–aryl ether linkages between lignin units reflect the distribution of recalcitrant lignin units, but have been neither absolutely defined nor quantitatively determined. Here in this work, 12 guaiacyl-type thioacidolysis dimers were identified and quantified using newly synthesized standards. One product previously attributed to deriving from β–1-coupled units was established as resulting from β–5 units, correcting an analytical quandary. Another longstanding dilemma, that no β–β dimers were recognized in thioacidolysis products from gymnosperms, was resolved with the discovery of two such authenticated compounds. Finally, individual GC response factors for each standard compound allowed rigorous quantification of dimeric products released from softwood lignins, affording insight into the various interunit-linkage distributions in lignins and thereby guiding the valorization of lignocellulosics.

Report Numbers

E 1.99:1427629

Subject(s)

Other Subject(s)

Note

Published through SciTech Connect.
01/26/2017.
ChemSusChem 10 5 ISSN 1864-5631 AM
Fengxia Yue; Fachuang Lu; Matt Regner; Runcang Sun; John Ralph.

Funding Information

FC02-07ER64494

View MARC record | catkey: 23499257