Regulation of coal polymer degradation by fungi. Fourth quarterly progress report, May 1995--June 1995

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Description

To test the hypothesis that coal (leonardite) Solubilization and the subsequent depolymerization of the solubilized coal macromolecules are distinct events in lignin degrading fungi. In addition to T versicolor, Phanerochaete chrysosporium, another lignin degrading fungus that also has the ability to solubilize coal, will be studied. To test the hypothesis that the processes of coal (leonardite) solubilization and coal macro molecule depolymerization in lignin degrading fungi can be regulated by altering the nutritional status of the microorganism. Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited ... continued below

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5 p.

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Irvine, R.L. July 24, 1995.

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Description

To test the hypothesis that coal (leonardite) Solubilization and the subsequent depolymerization of the solubilized coal macromolecules are distinct events in lignin degrading fungi. In addition to T versicolor, Phanerochaete chrysosporium, another lignin degrading fungus that also has the ability to solubilize coal, will be studied. To test the hypothesis that the processes of coal (leonardite) solubilization and coal macro molecule depolymerization in lignin degrading fungi can be regulated by altering the nutritional status of the microorganism. Coal solubilization is expected to occur in nutrient rich media whereas depolymerization of solubilized coal macromolecules is expected to occur in nutrient limited media. To determine the role of extracellular enzymes (laccases, lignin peroxidases and Mn peroxidases) that are secreted by lignin degrading fungi during coal solubilization or coal macro molecule depolymerization. To assess the role of enzymatically generated oxygen radicals, non-radical active oxygen species, veratryl alcohol radicals and Mn{sup +++} complexes in coal macro molecule depolymerization. To characterize products of coal solubilization and coal macro molecule depolymerization that are formed by T. versicolor and P. chrysosporium and their respective extracellular enzymes. Solubilization products formed using oxalic acid and other metal chelators will also be characterized and compared.

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5 p.

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OSTI as DE96005018

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  • Other Information: PBD: 24 Jul 1995

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  • Other: DE96005018
  • Report No.: DOE/PC/94209--T4
  • Grant Number: FG22-94PC94209
  • DOI: 10.2172/182624 | External Link
  • Office of Scientific & Technical Information Report Number: 182624
  • Archival Resource Key: ark:/67531/metadc671890

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  • July 24, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 3, 2015, 6:48 p.m.

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Irvine, R.L. Regulation of coal polymer degradation by fungi. Fourth quarterly progress report, May 1995--June 1995, report, July 24, 1995; United States. (digital.library.unt.edu/ark:/67531/metadc671890/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.