Detection and distribution analysis of oleoresin in gaharu wood by X-Ray micro-computed tomography Micro-CT

Mohd Zaid Abdullah, . and Khai`iah Yazid, . and Junita Mohamad Saleh, . and Mat Rasol Awang, . (2010) Detection and distribution analysis of oleoresin in gaharu wood by X-Ray micro-computed tomography Micro-CT. [Proceedings Paper]

Gaharu or agarwood is known for its fragrant resinous wood. It is a rare and precious oleoresin on the planet. prized for its rich and wonderful fragrance and healing properties. Traditionally the agarwood industry relies on human expertise to identify the agarwoods grade. It is usually based on visual observation of the gaharu wood surface by naked eyes. This method of wood grading has led to several problems such as inconsistency in grading despite by experienced workers where differences in opinion may occur. A modern technique of observation may reach the interior region of the wood. This advantage permits a more detailed study on the internal structure of gaharu wood by means of a non-destructive radiation imaging technique namely X-ray micro-computed tomography micro-CT. The hardware device used in this study was a desktop X-ray micro-tomography system at the Centre of Tomography in Nuclear Malaysia. This paper presents the results of oleoresin imaging of small pieces of gaharu wood chips of different grades. Micro-CT images of the specimens were obtained at 6.8 um resolution. Besides a clear distinction between pores and wood some bright white areas occured in the reconstruction images caused by a denser medium component in the wood apparently oleoresin deposits that attenuated the radiation. This technique demonstrates a potential application of the high resolution X-ray micro-CT in the detection of oleoresin in gaharu wood. The aim of this paper is to express the percentage of the oleoresin inside the wood based on grayscale CT images of gaharu wood that could be the basis for grading of agarwood.

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Abstract

Gaharu or agarwood is known for its fragrant resinous wood. It is a rare and precious oleoresin on the planet. prized for its rich and wonderful fragrance and healing properties. Traditionally the agarwood industry relies on human expertise to identify the agarwoods grade. It is usually based on visual observation of the gaharu wood surface by naked eyes. This method of wood grading has led to several problems such as inconsistency in grading despite by experienced workers where differences in opinion may occur. A modern technique of observation may reach the interior region of the wood. This advantage permits a more detailed study on the internal structure of gaharu wood by means of a non-destructive radiation imaging technique namely X-ray micro-computed tomography micro-CT. The hardware device used in this study was a desktop X-ray micro-tomography system at the Centre of Tomography in Nuclear Malaysia. This paper presents the results of oleoresin imaging of small pieces of gaharu wood chips of different grades. Micro-CT images of the specimens were obtained at 6.8 um resolution. Besides a clear distinction between pores and wood some bright white areas occured in the reconstruction images caused by a denser medium component in the wood apparently oleoresin deposits that attenuated the radiation. This technique demonstrates a potential application of the high resolution X-ray micro-CT in the detection of oleoresin in gaharu wood. The aim of this paper is to express the percentage of the oleoresin inside the wood based on grayscale CT images of gaharu wood that could be the basis for grading of agarwood.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SD235 M3P466 2009 Call Number
AGROVOC Term:	Oleoresins
AGROVOC Term:	Agarwood Wood
AGROVOC Term:	Tomography
AGROVOC Term:	Measurement
AGROVOC Term:	Grading
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11492

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