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Holz als Roh- und Werkstoff

, Volume 65, Issue 6, pp 477–481 | Cite as

Rapid characterisation of brown and white rot degraded chir pine and rubberwood by FTIR spectroscopy

  • Krishna Kumar Pandey
  • H. C. Nagveni
Originalarbeiten Originals

Abstract

Pinus roxburghii (chir pine) and Hevea brasiliensis (rubberwood) were degraded by brown-rot (Polyporus meliae) and white-rot (Trametes versicolor and Trametes hirsuta) fungi. The modification in the chemical structure of degraded wood was monitored by FTIR spectroscopy. In wood decayed by brown rot, there was a progressive increase in the lignin content, which is evident from increase in the relative intensities of lignin associated bands and a corresponding decrease in the intensities of carbohydrate bands. In contrast, there was a decrease in the lignin content of white rot decayed wood. Both the white rots used in this study showed preferential degradation of lignin, which is indicated by a reduction in relative intensities of lignin associated bands.

Keywords

Lignin Lignin Content Trametes Versicolor Beech Wood Polyporus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Schnellcharakterisierung von durch Weiß- und Braunfäulepilze abgebautem Holz von Pinus roxburghii und Hevea brasiliensis mittels FTIR-Spektroskopie

Zusammenfassung

Pinus roxburghii und Hevea brasiliensis wurden einem Befall durch den Braunfäulepilz (Polyporus meliae) und den Weißfäulepilzen (Trametes versicolor und Trametes hirsuta) ausgesetzt. Mittels FTIR Spektroskopie wurden Veränderungen in der chemischen Struktur des abgebauten Holzes untersucht. Bei dem durch Braunfäule zersetzten Holz nahm der Ligningehalt stetig zu, was aus dem Anstieg der dem Lignin zuzuordnenden Absorptionsbanden und dem entsprechenden Rückgang der Kohlenhydratbanden ersichtlich ist. Im Gegensatz dazu nahm der Ligningehalt von durch den Weißfäulepilz abgebautem Holz ab. Beide in dieser Studie verwendete Weißfäulepilze bauten bevorzugt Lignin ab. Dies ist durch den Rückgang der dem Lignin zuzuordnenden Absorptionsbanden zu erkennen.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Institute of Wood Science and TechnologyIndian Council of Forestry Research and EducationBangaloreIndia

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