热处理杨木的生物耐久性和工程特性

IF 0.7 4区农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD

Drvna Industrija Pub Date : 2023-12-15 DOI:10.5552/drvind.2023.0041

Seyedeh Masoomeh Zamani, R. Hajihassani, Saman Ghahri

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引用次数: 0

摘要

本研究旨在评估褐腐真菌 Coniophora puteana 的活性对热处理杨木的物理和机械性能以及生物抗性的影响。采用热木（Thermo-D）法对两种杨木（三角杨和黑杨）进行了热处理。对照组和热处理过的样本在褐腐真菌 C. puteana 的作用下暴露 16 周。在接触真菌前后，对试样的物理和机械特性进行了评估，包括密度、平行于纹理的压缩强度和冲击强度。还计算了真菌活动造成的试样质量损失（MLF）。此外，还检测了热改性对 C. puteana 产生漆酶的影响。在对照试样中观察到，真菌退化造成的质量损失最大，同时底物与酶的相互作用也最大，可检测到的漆酶水平持续下降。结果表明，热改性可以有效地保护杨木免受褐腐真菌的侵袭。

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Bio-Durability and Engineering Characteristics of Heat-Treated Poplar Wood

The aim of this study was to evaluate the effect of brown rot fungus Coniophora puteana activity on physical and mechanical properties as well as biological resistance of heat-treated poplar wood. Two poplar wood species (Populus deltoids and Populus nigra) were heat-treated by thermo-wood (Thermo-D) method. Control and heat-treated specimens were exposed to brown rot fungus C. puteana for 16 weeks. Physical and mechanical characteristics of specimens including density, compression strength parallel to the grain and impact strength were evaluated before and after exposure to fungus. Mass loss of specimens caused by fungal activity (MLF) was also calculated. In addition, the effect of thermal modification on laccase production by C. puteana was assayed. The highest mass loss due to fungal deterioration was observed in control specimens, coinciding with the highest substrate-enzyme interactions and constant decrease in detectable laccase levels. According to the results, thermal modification can be used effectively to protect poplar wood against brown rot fungus attack.

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来源期刊

Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.