<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>We investigated the distribution of extractive, phenolic, and polysaccharides content of young <italic>S. mahagoni</italic> trees aged 1 to 5 years. The wood powder materials in two vertical positions (bottom and top) were successively extracted using n-hexane, methanol, and hot water solutions. The results showed that there was a significant interaction between the tree age and axial position in all parameters. The methanol and total extractive content decreased significantly from 1 to 3-year-old at the top part. In contrast, the amount of hot water and total extractive increased significantly from 3 to 4-year-old trees at the bottom part. Furthermore, a significant increase was also found at the bottom heartwood for hexane, methanol, and the total extractive from 4 to 5-year-old trees. The reverse trend was observed in the polar fractions (methanol and hot water) at the top of the trees. Generally, the extractive pattern tends to decrease from bottom to top with the highest proportion of methanol extract (70% based on the total extractive weight), and it increased from sapwood to heartwood. The total phenolic content (TPC) and total soluble polysaccharides (TSP) generally increase with tree age (except for TSP from 2 to 3-year-old trees at the top part). The high content of TPC in the heartwood and TSP in the sapwood indicated the process of heartwood formation. In addition, a drastic decrease in the methanol extract and TSP at the age of 3 years at the top indicated that the TSP was transferred from top to bottom for the heartwood formation at the bottom part of 4-year-old trees.</p>
</abstract>

We investigated the distribution of extractive, phenolic, and polysaccharides content of young S. mahagoni trees aged 1 to 5 years. The wood powder materials in two vertical positions (bottom and top) were successively extracted using n-hexane, methanol, and hot water solutions. The results showed that there was a significant interaction between the tree age and axial position in all parameters. The methanol and total extractive content decreased significantly from 1 to 3-year-old at the top part. In contrast, the amount of hot water and total extractive increased significantly from 3 to 4-year-old trees at the bottom part. Furthermore, a significant increase was also found at the bottom heartwood for hexane, methanol, and the total extractive from 4 to 5-year-old trees. The reverse trend was observed in the polar fractions (methanol and hot water) at the top of the trees. Generally, the extractive pattern tends to decrease from bottom to top with the highest proportion of methanol extract (70% based on the total extractive weight), and it increased from sapwood to heartwood. The total phenolic content (TPC) and total soluble polysaccharides (TSP) generally increase with tree age (except for TSP from 2 to 3-year-old trees at the top part). The high content of TPC in the heartwood and TSP in the sapwood indicated the process of heartwood formation. In addition, a drastic decrease in the methanol extract and TSP at the age of 3 years at the top indicated that the TSP was transferred from top to bottom for the heartwood formation at the bottom part of 4-year-old trees.

The changes of extractive contents of young <italic>Swietenia mahagoni</italic> (L.) Jacq trees during heartwood formation

Department of Forest Products Technology, Faculty of Forestry

Forestry Studies

This work is licensed under the Creative Commons Attribution 4.0 International License.

The changes of extractive contents of young  (L.) Jacq trees during heartwood formation

We investigated the distribution of extractive, phenolic, and polysaccharides content of young S. mahagoni trees aged 1 to 5 years. The wood powder materials...

The changes of extractive contents of young Swietenia mahagoni (L.) Jacq trees during heartwood formation

Article Category: Research paper

Published Online: Jun 04, 2022

Page range: 64 - 79

Received: Jul 16, 2021

Accepted: Dec 29, 2021

DOI: https://doi.org/10.2478/fsmu-2021-0012

Keywords
extractive content, phenolics, polysaccharides, heartwood formation,

© 2021 Rizki Arisandi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

The changes of extractive contents of young Swietenia mahagoni (L.) Jacq trees during heartwood formation

Article Category: Research paper

Published Online: Jun 04, 2022

Page range: 64 - 79

Received: Jul 16, 2021

Accepted: Dec 29, 2021

DOI: https://doi.org/10.2478/fsmu-2021-0012

Keywordsextractive content, phenolics, polysaccharides, heartwood formation,

© 2021 Rizki Arisandi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
extractive content, phenolics, polysaccharides, heartwood formation,