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首页> 美国卫生研究院文献>Molecules >Relationship Between Wood Color Parameters Measured by the CIELab System and Extractive and Phenol Content in Acacia mangium and Vochysia guatemalensis from Fast-Growth Plantations
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Relationship Between Wood Color Parameters Measured by the CIELab System and Extractive and Phenol Content in Acacia mangium and Vochysia guatemalensis from Fast-Growth Plantations

机译：用CIELab系统测得的木材颜色参数与速生林中马占相思和危地马拉速溶树中提取物和苯酚含量的关系

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摘要

>: The heterogeneity of color distribution between sapwood and heartwood limits the market for wood from fast-growth plantations of tropical species. Wood color is associated with wood extractives contents. This study presents the relationship between wood color parameters measured by the CIELab color system and total amount of extractives and phenolic-type extractives in ethanol-toluene and hot water extracts of wood from two fast-growth plantation species. The results demonstrated that the difference in sapwood and hardwood color in Vochysia guatemalensis and Acacia mangium is caused by lower concentrations of extractives in sapwood of both species. Additionally, variations in total extractive and phenolic content have different effects on the color parameters (L*, a* and b*) of both species studied. In Vochysia guatemalensis wood, parameter L* decreases as total extractive and phenolic content increases; however, parameter a* increases as the content of extractives and phenols increases. In Acacia mangium, the amount of phenols showed no relationship with the color parameters. The ethanol-toluene total extractive content, however, shows a relationship with several color parameters. An increase in the content of total extractives in water and ethanol-toluene increases parameter a*, but decreases parameter L*.
机译：>：边材和心材之间颜色分布的异质性限制了来自热带物种快速生长的人工林的木材市场。木材颜色与木材提取物含量有关。这项研究提出了通过CIELab颜色系统测量的木材颜色参数与两种速生人工林木材的乙醇-甲苯和热水提取物中的提取物和酚类提取物的总量之间的关系。结果表明，Vochysia guatemalensis和Acacia mangium中边材和硬木颜色的差异是由于两种树材中边材中较低的提取物浓度引起的。此外，总提取物和酚类含量的变化对所研究的两种物种的颜色参数（L *，a *和b *）都有不同的影响。在危地马拉短木中，参数L *随着总提取物和酚含量的增加而降低；但是，参数a *随着萃取物和酚含量的增加而增加。在马占相思中，酚的含量与颜色参数无关。然而，乙醇-甲苯的总提取量显示出与几个颜色参数的关系。水和乙醇-甲苯中总萃取物含量的增加会增加参数a *，但会降低参数L *。

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