Lignin Characterization of Wheat Straw Samples as Determined by Chemical Degradation Procedures

  • C. Lapierre
  • D. Jouin
  • B. Monties


Extractive-free wheat straw, and the corresponding samples issued from its alkaline treatment — i.e. saponified wheat straw and alkali-soluble wheat lignin- were submitted to three chemical procedures of lignin characterization: nitrobenzene oxidation, acidolysis and thioacidolysis. The various performances of the three techniques were comparatively evaluated. The thioacidolysis procedure was found to have higher performances with regards to the two following criteria: the prominent alkyl aryl ether lignin structures were the almost exclusive source for the recovered degradation products; these products were obtained with a high yield. These advantages make the thioacidolysis procedure an unambiguous way to characterize grass lignins, even when present in low amounts.


Ferulic Acid Wheat Straw Compression Wood Wheat Sample Nitrobenzene Oxidation 
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Copyright information

© ECSC, EEC, EAEC, Brussles and Luxembourg 1989

Authors and Affiliations

  • C. Lapierre
    • 1
  • D. Jouin
    • 1
  • B. Monties
    • 1
  1. 1.Laboratoire de Chimie Biologique,INRAINA-Paris-GrignonThiverval GrignonFrance

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