Chee, Lye Yung (2007) Effect of extraction methods on essential oil contents of baeckea frutescens (Berunggis). Universiti Malaysia Sabah. (Unpublished)
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Abstract
This study was about extracting essential oils from Baeckea frutescens by conventional hydrodistillation (HD) method and ultrasonic-assisted extraction (USE) using ultrasound cleaning bath. The essential oils were analyzed using gas chromatography equipped with mass spectrometry (GC-MS). The weight of essential oils extracted using HD and USE was 1.098% (w/w) and 0.084% (w/w), respectively. Essential oils obtained by HD contained 13 components: IR-.ɑ-Pinene; p-Pinene; Limonene; Eucalyptol; 3-Penten-2-ol; Caryophyllene; α-Caryophyllene; 3-Octyne; Cyclohexene 1-methyl-4-1-[1- methylethylidene]-; Hexanedioic acid, bis[2-ethylhexyl] ester; 2,6-Octadienoic acid,3 ,7- dimethyl-,methyl ester; Cyclohexene,3-methyl-6-[1-methylethenyl]-,[3R-trans]-; and 3- Cyclohexene-l-methanol, .alpha.,.alpha. 4-trimethyl- (α-terpineol). Comparatively, essential oils obtained by USE contained 8 components: lR-.α.-Pinene; β-Pinene; Eucalyptol (l ,8-Cineole); 1,6-Octadien,3,7-dimethyl-; p-menth-l-en-8 ol (α-terpineol); Eicosane; Hexadecane; and 1,2-Benzenedicarboxylic acid,bis[2- methylpropyl] ester. The major components of Baeckea frutescens, Eucalyptol (l,8-Cineole) and Pinenes, were found in both extracts. The presence of Hexanedioic acids, bis[2-ethylhexyl] ester, 2,6- Octadienoic acid,3,7 -dimethyl-,methyl ester and 1,2-Benzenedicarboxylic acid,bis[2- methyl propyl] ester might possibly contribute to the aroma for the essential oils from Baeckea frutescens. The differences in components obtained by the extraction methods may probably be due to the use of drastic heat in HD compared in USE.
| Item Type: | Academic Exercise |
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| Keyword: | extraction, essential oil, hydrodistillation method, ultrasonic-assisted extraction, ultrasound cleaning bath |
| Subjects: | Q Science > QD Chemistry |
| Department: | SCHOOL > School of Science and Technology |
| Depositing User: | SITI AZIZAH BINTI IDRIS - |
| Date Deposited: | 26 Feb 2014 16:18 |
| Last Modified: | 12 Oct 2017 13:24 |
| URI: | https://eprints.ums.edu.my/id/eprint/8360 |
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