Abstract
In order to clarify the chemical color change of teak (Tectona grandis L.F.), the difference of chemical composition between the heartwood and sapwood of teak was investigated by gas chromatography–mass spectrometry (GC-MS) based on the acetone extractive compounds. The results showed that the difference in content of the main components between heartwood and sapwood was not obvious. However, the amount of extractives in heartwood was higher than that in sapwood, especially for phenols, quinones, and ketones. The most obvious different substances in the acetone extractive between heartwood and sapwood were 4-tert-butyl-2-phenyl-phenol,2-methyl-anthraquinone, and 2,3-dimethyl-1,4,4a,9a-tetrahydro-9,10-anthracenedione, which might be the main composition for the chromatic aberration of teak. This paper focuses on a preliminary study and further work such as high-performance liquid chromatography (HPLC) with ultraviolet photometric detector (UV)/mass spectrometry (MS) will be carried out.
Highlights
Teak (Tectona grandis L.F.), as one of the most famous timber species all over the world, is distributed from 73◦ E in India to 104◦ 300 E in Thailand, and from the island of Java at 8◦ 450 S to the low hills and plains which is below 800 m in northern Myanmar in terms of its origin [1]
The acetone extractives in heartwood were higher in composition and content than those in sapwood (Figure 2)
The proportion of extractives in wood is small, they play an important role in the particular characteristics such as the color and smell of the wood, which is highly related to wood discoloration [32,33]
Summary
Teak (Tectona grandis L.F.), as one of the most famous timber species all over the world, is distributed from 73◦ E in India to 104◦ 300 E in Thailand, and from the island of Java at 8◦ 450 S to the low hills and plains which is below 800 m in northern Myanmar in terms of its origin [1]. It is widely used in boat masts and decks, furniture, railway sleepers and other applications due to its important advantages such as high hardness and durability, fine texture, beautiful texture, antiseismic performance, small shrinkage, etc. As the chemical composition of wood is one of the most important factors for its properties, it should not be ignored
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