The Role of Lignin on Decay Resistance of Ulin (Eusideroxylon zwageri T. et B.) to Wood-rotting Fungi

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概要

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• The effect of delignification on decay resistance of Ulin (Eusideroxylon zwageri T. et B.) to the fungi of Coriolus versicolor and Tyromyces polutris was studied. The preliminary study of the lignin properties of Ulin revealed that the lignin of this wood primarily constitutes of guaiacyl lignin, notwithstanding the fact that the wood is a typical hardwood. The results of delignification process showed that at one hour delignification by chlorite treatment, the delignification rate of Ulin is extremely slower than those of Buna (Fagus crenata) and Sugi (Cryptomeria japonica). In order to get more information about the influence of lignin on the fungal attack on wood, a decay experiment on normal and delignified wood meals was conducted. The wood decay test showed that there is great differences in the weight loss of normal and delignified wood of Ulin after being exposed to the fungi for four months of incubation. The result of the present investigation indicated that the degree of lignin removal from wood by chlorite treatment is not closely correlated to the change in the weight loss after fungal attack.ウリン材の大きな耐朽性の一因がリグニンにあると考えてその性状をブナ，スギと比べながら追求した．リグニン量はスギなみであったが，廣葉樹材であるのにグアイアシル基が過半をしめた。また亜塩素酸塩処理をしたときのリグニンの除かれ方がブナ，スギより著しく遅かった。0，1，2，3時間亜塩素酸塩処理した木粉夫々でカワラタケ，オオウズラタケを培養して木粉の重量減少を調べた。処理時間の長い木粉ほどリグニン含量は小さく，腐朽による重量減少は大きかったが，両者の間に強い相関は認められなかった。

著者

• Syafii Wasrin

  Dept. Of Forest Products Technology Faculty Of Forestry Bogor Agricultural University

• Samejima M

  Department Of Forest Products Faculty Of Agriculture The University Of Tokyo

関連論文

• The Role of Lignin on Decay Resistance of Ulin (Eusideroxylon zwageri T. et B.) to Wood-rotting Fungi
• The Role of Extractives in Decay Resistance of Ulin Wood (Eusideroxylon zwageri T. et B.)
• Isolation of Syringaresinol from Paraserianthes falcataria (L.) Nielsen
• ウリン材の耐朽性におけるリグニンの役割〔英文〕
• ウリン(Eusideroxylon zwageri)心材のネオリグナン類〔英文〕
• The Effect of Lignin Structure on Decay Resistance of Some Tropical Woods
• Purification and Some Properties of the Enzyme Catalyzing the C_γ-Elimination of a Diarylpropane-type Lignin Model from Pseudomonas paucimobilis TMY1009(Biological Chemistry)
• Purification and Some Properties of Lignostilbene-α,β-dioxygenase Responsible for the C_α-C_β Cleavage of a Diarylpropane Type Lignin Model Compound from Pseudomonas sp. TMY1009(Biological Chemistry)
• Purification and Some Properties of Two C_α-dehydrogenases Oxidizing Dimeric Lignin Model Compounds from Pseudomonas sp. TMY1009(Biological Chemistry)

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