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首页> 外文期刊>Holzforschung >Wood color changes and termiticidal properties of teak heartwood extract used as a wood preservative
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Wood color changes and termiticidal properties of teak heartwood extract used as a wood preservative

机译：柚木心材提取物作为木材防腐剂的木材颜色变化和杀菌性能

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摘要

The aim of this study was to evaluate the change in colorimetric patterns and the termite resistance of light-colored and low durability wood when impregnated with teak (Tectona grandis) heartwood extractives. Hot water and ethanol extracts were obtained from 20-year-old teak heartwood and used to evaluate the influence on color change and the natural resistance of 10-year-old teak sapwood and Pinus sp. For wood impregnation, a full-cell (Bethell) treatment was conducted. To verify the influence of the teak extracts, the colorimetric patterns of wood were determined using the Munsell and CIE-L*a*b* systems. Choice and no-choice feeding tests were performed under laboratory conditions to test the efficacy of the teak extract solutions against two termite species Nasutitermes corniger and Cryptotermes brevis. All of the extract solutions promoted a significant darkening of the wood, bringing the color of the impregnated wood closer to older teak heartwood than the untreated samples of the respective species. Ethanol extracts increased the resistance and mortality against N. corniger in both choice and no-choice tests. Resistance to C. brevis was not clearly affected.
机译：这项研究的目的是评估用柚木（Tectona grandis）心材提取物浸渍后，浅色和低耐久性木材的比色模式变化和抗白蚁性能。从20年历史的柚木心材中提取热水和乙醇提取物，并用于评估10年历史的柚木边材和Pinus sp。对颜色变化和自然抵抗力的影响。对于木材浸渍，进行了全细胞（贝塞尔）处理。为了验证柚木提取物的影响，使用Munsell和CIE-L * a * b *系统确定了木材的比色模式。在实验室条件下进行选择喂养和不选择喂养试验，以测试柚木提取物溶液对两种白蚁Nasutitermes corniger和Cryptotermes brevis的功效。所有提取物溶液均能促进木材的显着变黑，使浸渍木材的颜色比未处理样品的柚木心材更接近旧柚木心材。在选择试验和非选择试验中，乙醇提取物均增加了对角叉猪笼草的抗性和死亡率。对短毛梭菌的抗性没有明显影响。

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  • 来源
    《Holzforschung》 |2020年第3期|233-245|共13页
  • 作者

  • 作者单位

    Univ Fed Espirito Santo Dept Forest & Wood Sci Av Governador Lindemberg 316 BR-29550000 Jeronimo Monteiro ES Brazil;

    USDA FS Forest Prod Lab One Gifford Pinchot Dr Madison WI 53726 USA;

    Inst Technol Res Sao Paulo State IPT Ctr Forest Resources Technol Av Prof Almeida Prado 532 BR-05508901 Sao Paulo SP Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    eco-friendly preservative; natural extracts; Tectona grandis; termite resistance; wood color modifier; wood protection;

    机译：环保的防腐剂;天然提取物;Tectona grandis;抗白蚁木材颜色改良剂;木材保护;

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