Neighbourhood of vessels: chemical composition and microfibril angle of fibre within Acacia mangium

Horikawa Y., . and Yansen, . and Sugiyama J., . and Yahya R., . and Sundaryono A., . Neighbourhood of vessels: chemical composition and microfibril angle of fibre within Acacia mangium. pp. 267-274. ISSN 0128-1283

Fibre length is affected by vessel transverse enlargement during differentiation following derivation from fusiform initial cells. In previous studies thicker and shorter fibres were found adjacent to vessel. The objective of this study is to investigate the chemical composition and microfibril angle (MFA) of fibres depending on their distance from vessel. A wood block of 10 7 7 mm (R T L) was sliced into 5 m and 20 m thickness in a radial-longitudinal direction as samples for chemical composition and MFA analysis respectively. The distance of fibres from the vessel was used as the parameter to classify the fibres into two groups. Fourier transform infrared (FTIR) combined with principal component analysis (PCA) demonstrated that higher lignin and lower carbohydrate content were attained from fibres adjacent to vessel compared to the distant ones. In addition visualising cellulose microfibril by iodine precipitation technique indicated that MFA of fibre increased with closer distance to vessel. The results obtained in this study would allow us to control the quality of processing for better pulp production.

Full text available from: Official URL: https://www.frim.gov.my/v1/jtfsonline/jtfs/v29n3/2...

Abstract

Fibre length is affected by vessel transverse enlargement during differentiation following derivation from fusiform initial cells. In previous studies thicker and shorter fibres were found adjacent to vessel. The objective of this study is to investigate the chemical composition and microfibril angle (MFA) of fibres depending on their distance from vessel. A wood block of 10 7 7 mm (R T L) was sliced into 5 m and 20 m thickness in a radial-longitudinal direction as samples for chemical composition and MFA analysis respectively. The distance of fibres from the vessel was used as the parameter to classify the fibres into two groups. Fourier transform infrared (FTIR) combined with principal component analysis (PCA) demonstrated that higher lignin and lower carbohydrate content were attained from fibres adjacent to vessel compared to the distant ones. In addition visualising cellulose microfibril by iodine precipitation technique indicated that MFA of fibre increased with closer distance to vessel. The results obtained in this study would allow us to control the quality of processing for better pulp production.

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Item Type:	Article
AGROVOC Term:	Acacia mangium
AGROVOC Term:	Chemical composition
AGROVOC Term:	Fibres
AGROVOC Term:	Thickness
AGROVOC Term:	Lignins
AGROVOC Term:	Carbohydrate content
AGROVOC Term:	Cellulose
AGROVOC Term:	Precipitation
AGROVOC Term:	Pulp
AGROVOC Term:	Spectroscopy
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/23621

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