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首页> 外文期刊>Journal of Wood Chemistry and Technology >Accelerated Mold Test on Dried Pine Sapwood Boards: Impact of Contact Heat Treatment
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Accelerated Mold Test on Dried Pine Sapwood Boards: Impact of Contact Heat Treatment

机译：干松边材板的模具加速测试：接触热处理的影响

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摘要

We test the hypothesis that the combination of kiln drying of double-stacked boards and contact heat treatment will reduce the susceptibility of treated boards to colonization by mold fungi. Winter-felled Scots pine (Pinus sylvestris L.) sapwood boards were double-stacked in an industrial kiln in "sapwood out" and "sapwood in" positions. Dried samples were then contact heat-treated using a hot press at three different temperatures (140°C, 170°C, and 200°C) for three different periods (1, 3, and 10 min). An accelerated mold test was performed in a climate chamber where naturally mold-infected samples were used as a source of mold inocula. Contact heat treatment degraded the saccharides that accumulated at dried surfaces, and reduced the mold growth. The threshold temperature and time for inhibiting mold growth were 170°C for 10 min. However, for industrial application, the most feasible combination of temperature and time would be 200°Cfor 3 min. We concluded that double stacking/contact heat treatment used is an environmentally friendly alternative to chemicals for reducing mold on Scots pine sapwood boards.
机译：我们检验了这样一种假说，即双层干燥板的窑炉干燥和接触热处理的组合将降低处理过的板对霉菌定植的敏感性。将冬天倒下的苏格兰松树（Pinus sylvestris L.）边材板在工业窑中以“边材出”和“边材进”的位置双层堆叠。然后使用热压机将干燥的样品在三个不同的温度（140°C，170°C和200°C）下进行热接触三个不同的时间段（1、3和10分钟）。在气候室中进行了加速霉菌测试，在气候箱中，自然感染了霉菌的样本被用作霉菌接种源。接触热处理可降解积聚在干燥表面上的糖类，并减少霉菌的生长。抑制霉菌生长的阈值温度和时间为170°C，持续10分钟。但是，对于工业应用，最可行的温度和时间组合是200°C持续3分钟。我们得出的结论是，使用双堆叠/接触式热处理是一种环保的替代化学品，可减少苏格兰松木边材板上的霉菌。

著录项

  • 来源
    《Journal of Wood Chemistry and Technology》 |2013年第3期|174-187|共14页
  • 作者

    SHEIKH ALI AHMED; QIAN YANG; MARGOT SEHLSTEDT-PERSSON; TOM MOREN;

  • 作者单位

    Department of Engineering Sciences and Mathematics, Division of Wood Science and Engineering, Lulea University of Technology, Skelleftea, Sweden;

    Department of Engineering Sciences and Mathematics, Division of Wood Science and Engineering, Lulea University of Technology, Skelleftea, Sweden;

    Department of Engineering Sciences and Mathematics, Division of Wood Science and Engineering, Lulea University of Technology, Skelleftea, Sweden;

    Department of Engineering Sciences and Mathematics, Division of Wood Science and Engineering, Lulea University of Technology, Skelleftea, Sweden;

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

    accelerated mold test; climate chamber; double-stacked drying; contact heat treatment; mold grade; soluble sugar migration;

    机译：加速模具测试;气候室双层干燥接触热处理;模具等级可溶性糖迁移;

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