Hydrolytic enzyme activity of EN113 standard basidiomycetes in the fermentation of lignocellulosic material and wood colonization
-
Vladimir Elisashvili
,
Ilze Irbe
Abstract
The white-rot fungus Trametes versicolor and brown-rot fungi Coniophora puteana, Gloeophyllum trabeum, and Postia placenta have a potential to produce a range of hydrolytic enzymes participating in the degradation of lignocellulosic materials. In the colonization of untreated and thermally modified wood blocks wheat bran-containing medium (WBA) greatly favored the secretion of xylanase by C. puteana and both endoglucanase and xylanase expression by T. versicolor, although rather higher carboxymethyl cellulase activity of C. puteana was observed on the malt extract-based medium (malt extract-containing agar (MEA). Coniophora puteana and T. versicolor are able to actively colonize and degrade the untreated pine and birch wood blocks. The mycelium applied on blocks in the form of pellets was more aggressive in wood degradation in comparison with the colonized mycelium. WBA favored the dry matter loss during the initial stages (10–20 days) of pine wood colonization; however, MEA further promoted more rapid wood degradation. The main finding was that the thermal treatment of birch wood was accompanied by a low degree of fungal colonization and increased durability against the fungal attack in spite of the high cellulase and xylanase activities. Thermal modification of wood was not toxic to the fungi because it did not disturb the secretion of the hydrolytic enzymes involved in wood degradation. The thermally modified hollocellulose is probably less susceptible to the enzymes involved in the degradation of polysaccharides or less accessible to hydrolytic enzymes due to the change of the cell wall structure.
©2012 by Walter de Gruyter Berlin Boston
Artikel in diesem Heft
- Masthead
- Masthead
- Review
- Comparative evaluation of different kinetic models for batch cooking: A review
- Original Papers
- Characteristics of prehydrolysis-kraft pulp fibers from Scots pine
- Treating birch wood with a switchable 1,8-diazabicyclo-[5.4.0]-undec-7-ene-glycerol carbonate ionic liquid
- Optical properties of thermomechanical pulp (TMP) obtained from sulfite-pretreated Norway spruce with focus on two-photon spectral imaging (TPSI)
- Physicochemical properties of sodium lignosulfonates (NaLS) modified by laccase
- Determination of metal ions in single wood fiber by LA-ICP-MS
- Hydrolytic enzyme activity of EN113 standard basidiomycetes in the fermentation of lignocellulosic material and wood colonization
- Influence of the viscosity of UF resins on the radial and tangential penetration into poplar wood and on the shear strength of adhesive joints
- Development of soy-based adhesives for the manufacture of wood composite products
- Exploratory study on fatigue behaviour of laterally loaded, nailed timber joints, based on a dissipated energy criterion
- Young’s and shear moduli of glued laminated timber composed of different species obtained by a flexural vibration test
- Heartwood detection for Scotch pine by fluorescence image analysis
- The antagonistic properties of Trichoderma spp. inhabiting woods for potential biological control of wood-damaging fungi
- Investigation of copper solubilization and reaction in micronized copper treated wood by electron paramagnetic resonance (EPR) spectroscopy
- A genetic marker of 4-coumarate: coenzyme A ligase gene in the cinnamaldehyde-chemotype Cinnamomum osmophloeum
- Meetings
- Meetings
Artikel in diesem Heft
- Masthead
- Masthead
- Review
- Comparative evaluation of different kinetic models for batch cooking: A review
- Original Papers
- Characteristics of prehydrolysis-kraft pulp fibers from Scots pine
- Treating birch wood with a switchable 1,8-diazabicyclo-[5.4.0]-undec-7-ene-glycerol carbonate ionic liquid
- Optical properties of thermomechanical pulp (TMP) obtained from sulfite-pretreated Norway spruce with focus on two-photon spectral imaging (TPSI)
- Physicochemical properties of sodium lignosulfonates (NaLS) modified by laccase
- Determination of metal ions in single wood fiber by LA-ICP-MS
- Hydrolytic enzyme activity of EN113 standard basidiomycetes in the fermentation of lignocellulosic material and wood colonization
- Influence of the viscosity of UF resins on the radial and tangential penetration into poplar wood and on the shear strength of adhesive joints
- Development of soy-based adhesives for the manufacture of wood composite products
- Exploratory study on fatigue behaviour of laterally loaded, nailed timber joints, based on a dissipated energy criterion
- Young’s and shear moduli of glued laminated timber composed of different species obtained by a flexural vibration test
- Heartwood detection for Scotch pine by fluorescence image analysis
- The antagonistic properties of Trichoderma spp. inhabiting woods for potential biological control of wood-damaging fungi
- Investigation of copper solubilization and reaction in micronized copper treated wood by electron paramagnetic resonance (EPR) spectroscopy
- A genetic marker of 4-coumarate: coenzyme A ligase gene in the cinnamaldehyde-chemotype Cinnamomum osmophloeum
- Meetings
- Meetings
