Wood colour in Lapacho (Tabebuia serratifolia): chemical composition and industrial implications

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• 作者：Manuela Romagnoli (1)
  Enrico Segoloni (1) (2)
  Marcello Luna (1)
  Andrea Margaritelli (2)
  Moreno Gatti (2)
  Ulderico Santamaria (3)
  Vittorio Vinciguerra (4)
  
• 刊名：Wood Science and Technology
• 出版年：2013
• 出版时间：July 2013
• 年：2013
• 卷：47
• 期：4
• 页码：701-716
• 全文大小：407KB
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• 作者单位：Manuela Romagnoli (1)
  Enrico Segoloni (1) (2)
  Marcello Luna (1)
  Andrea Margaritelli (2)
  Moreno Gatti (2)
  Ulderico Santamaria (3)
  Vittorio Vinciguerra (4)
  
  1. Department of Science and Technologies of Agriculture, Forest, Nature and Energy (DAFNE), University of Tuscia, Viterbo, Italy
  2. Margaritelli Spa, Torgiano, Perugia, Italy
  3. Department of Science of Cultural Heritage (DISBEC), University of Tuscia, Viterbo, Italy
  4. Department for Innovation in Biological (DIBAF), Agro-Food and Forest Systems, Viterbo, Italy
  
• ISSN：1432-5225

文摘

This study is aimed at relating the colour of Tabebuia serratifolia (Bignoniaceae family) wood to its chemical composition and technological characteristics, such as hardness and gluing, important for the manufacture of wood flooring. Samples with standard wood colour and evident chromatic anomalies were subjected to CIELAB colorimetric and gas-chromatography analyses. Red and yellow wood colour is associated with the presence of lapachol and dehydro-α-lapachone, respectively, whereas large amounts of polyphenols were found in black parts, together with other quinone compounds. Wood is hardest where lapachol gives rise to a yellow chromatic zone (L1). Delamination tests have shown that polyphenols affect lamella bonding strength. The results may be used by the wood flooring industry to identify the chemical constituents of T. serratifolia according to its colour and foresee possible problems during the production process.