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Appl. Environ. Microbiol., Jan 1995, 379-381, Vol 61, No. 1
Copyright © 1995, American Society for Microbiology

Transformation of (sup14)C-Lignin-Labeled Cell Walls of Wheat by Syntrophococcus sucromutans, Eubacterium oxidoreducens, and Neocallimastix frontalis

MA Bernard-Vailhe, JM Besle and J Dore
Unite de la Digestion Microbienne, INRA Clermont-Ferrand-Theix, 63122 St Genes Champanelle, France

Wheat cell walls, saponified or not, labeled with [U-(sup14)C]phenylalanine or [O-methyl-(sup14)C]sinapate were fermented by Neocallimastix frontalis or Syntrophococcus sucromutans plus Eubacterium oxidoreducens or a mixed culture. Phenolics were less solubilized but more transformed by bacteria than by the fungus, and mineralization was slight. S. sucromutans O-demethylated [O-methyl-(sup14)C]syringyl lignins, yielding labeled acetate.




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