Characterization of white zones produced on Pinus radiata wood chips by Ganoderma australe and Ceriporiopsis subvermispora |
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Authors: | Ferraz André Parra Carolina Freer Juanita Baeza Jaime Rodríguez Jaime |
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Institution: | (1) Departamento de Biotecnologia, Faculdade de Engenharia Química de Lorena, CP 116, 12600-000 Lorena, SP, Brazil;(2) Renewable Resources Laboratory, Universidad de Concepción, Casilla 160-C, Concepción, Chile |
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Abstract: | White zones produced on biodegraded Pinus radiata wood chips were characterized by micro-localized-FTIR (Fourier Transformed Infra Red) spectroscopy and scanning electron
microscopy. Both techniques permitted assignment of the white zones to a selective lignin removal process. Although both fungi
studied have degraded lignin selectively in these restricted superficial areas, chemical analysis of the wood chips indicated
that Ganoderma australe removed 16% of the initial amount of glucan at the 20% weight loss level. Ceriporiopsis subvermispora did not remove glucan at weight loss values below 17%. Prolonged biodegradation resulted in reduction of white zones by G. australe, and increased white zones from C. subvermispora decayed samples.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | Ceriporiopsis subvermispora Ganoderma australe Pinus radiata biodegradation |
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