Resistance of bioincised wood treated with wood preservatives to blue-stain and wood-decay fungi
Resistance of bioincised wood treated with wood preservatives to blue-stain and wood-decay fungi
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DOI：
10.1016/j.ibiod.2010.10.003
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发表时间：
2011
影响因子：
4.8
通讯作者：
M. Schubert;T. Volkmer;C. Lehringer;F. Schwarze
中科院分区：
文献类型：
--
作者：
M. Schubert;T. Volkmer;C. Lehringer;F. Schwarze
生物切割是一种生物技术过程，其目的是提高具有低渗透性的木材物种（例如挪威云杉（Piceabies（L.）喀斯特）。该工艺基于白腐真菌Physisporinus vitreus的短期预处理。在培养过程中，边缘和半边缘纹孔的膜被认为是由真菌活动降解，从而导致木材防腐剂对木材结构的更好的可处理性。在本研究中，首先，生物切割挪威云杉心材和未经处理的控制对蓝变和木材腐烂真菌（白色-和褐腐）的抗性进行了测定。然后，bioincised和未经处理的标本浸渍或真空浸渍与六个木材防腐剂和物质的吸收进行了重量分析评估。此外，3-碘-2-丙炔基丁基氨基甲酸酯（IPBC）的渗透到木材进行了分析，通过高压液相色谱法（HPLC）。最后，根据欧洲标准EN 152和EN 113评估木材抗性。结果表明，没有防腐剂的生物切割木材和未经处理的木材对蓝变变色没有差异。然而，对木材腐烂的敏感性显著增加（P <0.05）。在生物切割木材样品中，确定了所有不同防腐剂的显著更高的吸收，并且HPLC方法显示IPBC比对照样品更深地渗透到生物切割木材中。生物切割木材对防腐剂的吸收提高，导致对白色和褐腐真菌的抗性显着提高。然而，只有轻微的保护木材变色的蓝变真菌记录。这项研究的结果首次表明，生物技术过程与P.玻璃体可以用来提高木材耐久性，通过增加木材防腐剂的吸收和渗透。
Bioincising is a biotechnological process that aims at the improvement of wood preservative uptake in wood species with a low permeability, such as Norway spruce (Picea abies (L.) Karst). The process is based on a short-term pre-treatment with white-rot fungus Physisporinus vitreus. During incubation the membranes of bordered and half bordered pits are supposed to be degraded by fungal activity resulting in a better treatability of the wood structure for wood preservatives. In the present study, first of all the resistance of bioincised Norway spruce heartwood and untreated controls against blue-stain and wood-decay fungi (white- and brown-rot) was determined. Then, bioincised and untreated specimens were dipped or vacuum impregnated with six wood preservatives and substance uptake was assessed gravimetrically. Additionally, the penetration of 3-iodo-2-propynyl butylcarbamate (IPBC) into the wood was analyzed by high-pressure liquid chromatography (HPLC). Finally, wood resistance was assessed according to the European standards EN 152 and EN 113. Results showed no difference between bioincised wood without preservatives and the untreated wood against blue-stain discolouration. However, a significant (P < 0.05) increase in susceptibility against wood decay was recorded. In the bioincised wood samples a significantly higher uptake of all the different preservatives was determined and the HPLC-method revealed that IPBC penetrated deeper into bioincised wood than into control samples. The improved uptake of preservatives into bioincised wood resulted in a significantly higher resistance against white- and brown-rot fungi. However, only a slight protection against wood discolouration by blue-stain fungi was recorded. The results of this study show for the first time that the biotechnological process with P. vitreus can be used to improve wood durability by increasing the uptake and penetration of wood preservatives.