Study of Eurycoma longifolia by FT-IR and 2D-IR correlation spectroscopy

Ling S K., . and Salbiah M., . and Fauziah A., . and Mohamad Lokmal N., . (2009) Study of Eurycoma longifolia by FT-IR and 2D-IR correlation spectroscopy. [Proceedings Paper]

Eurycoma longifolia or locally known as Tongkat Ali is a single stemmed slow growing under-storey tree of the rainforests of Southeast Asia. It is used throughout the region as herbal medicine and tonic. The active ingredients are concentrated in the root. In this paper we employed Fourier transform infrared FT-IR spectroscopy and two dimensional 2D IR correlation spectroscopy to analyse and compare the root material of Eurycoma longifolia collected from five forest reserves in Peninsular Malaysia. The results showed that FT-IR spectra have small differences and their secondary derivative spectra have enhanced spectral resolution. Furthermore using the pattern of 2D-IR correlation spectra under thermal perturbation the spectral resolution was greatly enhanced and excellent macroscopic fingerprint features was obtained rapidly without going through sample extraction. The differences embodied mainly on the position of auto-peaks and the intensity ratio between the autopeaks.

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Abstract

Eurycoma longifolia or locally known as Tongkat Ali is a single stemmed slow growing under-storey tree of the rainforests of Southeast Asia. It is used throughout the region as herbal medicine and tonic. The active ingredients are concentrated in the root. In this paper we employed Fourier transform infrared FT-IR spectroscopy and two dimensional 2D IR correlation spectroscopy to analyse and compare the root material of Eurycoma longifolia collected from five forest reserves in Peninsular Malaysia. The results showed that FT-IR spectra have small differences and their secondary derivative spectra have enhanced spectral resolution. Furthermore using the pattern of 2D-IR correlation spectra under thermal perturbation the spectral resolution was greatly enhanced and excellent macroscopic fingerprint features was obtained rapidly without going through sample extraction. The differences embodied mainly on the position of auto-peaks and the intensity ratio between the autopeaks.

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. mal QK99 M3S471 2008 Call Number
AGROVOC Term:	SPECTROMETRY
AGROVOC Term:	INFRARED SPECTROPHOTOMETRY
AGROVOC Term:	TRADITIONAL MEDICINES
AGROVOC Term:	HERBACEOUS PLANTS
AGROVOC Term:	MALAYSIA
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11366

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