Identification of volatile constituents from fresh sample of Baeckea frutescens L. and their distilled oils

Nik Yasmin N. Y., . and Mohd. Faridz Z. P., . and Ahmad Abdul Qayyum M., . and Saidatul Husni S., . and Mazura P., . and Nor Azah M. A., . and Mailina J., . and Fadzureena J., . and Abd. Majid J., . (2010) Identification of volatile constituents from fresh sample of Baeckea frutescens L. and their distilled oils. [Proceedings Paper]

Baeckea fructescens L. or locally known as chuchur atap was collected from FRIM Setiu search Station Terengganu. The whole fresh plants materials were subjected to four exraction methods viz. solid-phase microextraction SPME head-space HS extraction conventional hydrodistillation HD and microwave assisted hydrodistillation MAHD with chemical components analysed by GC and GCMS. For the first two methods the fresh samples were used directly for analysis without any pre-treatment or processing. Qualitative d quantitative analysis of fresh samples analysed using the SPME and HS method showed the presence of nearly 25 and 20 volatile constituents respectively. On the other hand about 60 and 50 constituents were found in the distilled oils using HD and MAHD methods respectively. The peaks in GC chromatogram with area percentage of more than 10 were considered as major constituents. From SPME data the major chemical constituents were gamma-terpinene rho-cymene alpha-pinene and 1 8-cineole. Whereas by HS only detected gamma-terpinene alpha-pinene and rho-cymene as major components. In hydrodistilled and microwave distilled oils e major constituents were similar to HS but with different percentages of concentration. Other appreciable amounts of linalool terpinolene terpinen-4-ol alpha-terpineol alpha-humulene beta-caryophyllene and geraniol were also identified. Baeckeol a chemical marker for this species was detected only in oils from HD and MAHD technique and in fresh sample through PME method.

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Abstract

Baeckea fructescens L. or locally known as chuchur atap was collected from FRIM Setiu search Station Terengganu. The whole fresh plants materials were subjected to four exraction methods viz. solid-phase microextraction SPME head-space HS extraction conventional hydrodistillation HD and microwave assisted hydrodistillation MAHD with chemical components analysed by GC and GCMS. For the first two methods the fresh samples were used directly for analysis without any pre-treatment or processing. Qualitative d quantitative analysis of fresh samples analysed using the SPME and HS method showed the presence of nearly 25 and 20 volatile constituents respectively. On the other hand about 60 and 50 constituents were found in the distilled oils using HD and MAHD methods respectively. The peaks in GC chromatogram with area percentage of more than 10 were considered as major constituents. From SPME data the major chemical constituents were gamma-terpinene rho-cymene alpha-pinene and 1 8-cineole. Whereas by HS only detected gamma-terpinene alpha-pinene and rho-cymene as major components. In hydrodistilled and microwave distilled oils e major constituents were similar to HS but with different percentages of concentration. Other appreciable amounts of linalool terpinolene terpinen-4-ol alpha-terpineol alpha-humulene beta-caryophyllene and geraniol were also identified. Baeckeol a chemical marker for this species was detected only in oils from HD and MAHD technique and in fresh sample through PME method.

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Item Type:	Proceedings Paper
Additional Information:	2 tbles; 4 ref. SB 293 S471 2010
AGROVOC Term:	Oils
AGROVOC Term:	Myrtaceae
AGROVOC Term:	Medicinal plants
AGROVOC Term:	Herbal teas
AGROVOC Term:	Gas chromatography
AGROVOC Term:	Gc gas chromatography
AGROVOC Term:	Chemical elements
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:14
URI:	http://webagris.upm.edu.my/id/eprint/11527

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