Limited bacterial mineralization of fungal degradation intermediates from synthetic lignin.

AUTOR(ES)

Rüttimann, C

RESUMO

The ability of selected bacterial strains and consortia to mineralize degradation intermediates produced by Phanerochaete chrysosporium from 14C-labeled synthetic lignins was studied. Three different molecular weight fractions of the intermediates were subjected to the action of the bacteria, which had been grown on a lignin-related dimeric compound. Two consortia isolated from wood being decayed naturally by a Ganoderma species of white rot fungus (the palo podrido system) mineralized 10 to 11% of the fraction with a molecular weight of approximately 500 but less than 4% of the higher- and lower-molecular-weight fractions. The consortia mineralized 5 to 9% of the original lignins. The ability of two pseudomonads isolated earlier from lignin-rich environments to mineralize the original lignins or fungus degradation products was much lower.

Documentos Relacionados

• Intermediates and products of synthetic lignin (dehydrogenative polymerizate) degradation by Phlebia tremellosa.
• The Electrophoretic Behavior of Lignin. 12
• Fungal degradation of recalcitrant nonphenolic lignin structures without lignin peroxidase.
• Degradation and Mineralization of High-Molecular-Weight Polycyclic Aromatic Hydrocarbons by Defined Fungal-Bacterial Cocultures
• Extracellular Enzyme Production and Synthetic Lignin Mineralization by Ceriporiopsis subvermispora