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Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant

Owing to the annually increasing market value of pure agarwood oil, the extractedagarwood oil from Aquilaria malaccensis was emulsified in an aqueous solution using non-ionic surfactant (Tween 80). The surfactant concentration of 0.0167% was determined as the critic...

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Main Authors: Abu Bakar, Noor Fitrah, Naim, Mohd Nazli, Boon, Yih Tien, Lenggoro, Wuled, Ahmad, Noraini
Format: Article
Language:English
Published: Trans Tech Publications 2019
Online Access:http://psasir.upm.edu.my/id/eprint/82231/1/Stabilisation%20of%20.pdf
http://psasir.upm.edu.my/id/eprint/82231/
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spelling my.upm.eprints.822312020-12-16T06:39:31Z http://psasir.upm.edu.my/id/eprint/82231/ Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant Abu Bakar, Noor Fitrah Naim, Mohd Nazli Boon, Yih Tien Lenggoro, Wuled Ahmad, Noraini Owing to the annually increasing market value of pure agarwood oil, the extractedagarwood oil from Aquilaria malaccensis was emulsified in an aqueous solution using non-ionic surfactant (Tween 80). The surfactant concentration of 0.0167% was determined as the criticalmicelle concentration (CMC) with an interfacial tension value of 0.014 mNm-1. The adsorption of surfactant at the oil/water interface at the CMC value, however, reduced the zeta potential of the emulsified oil from –45 to –43 mV, and increased its size from 85 to 89 nm. Outside of the CMC value, the emulsified oil droplets tended to coalesce, owing to insufficient coverage of the surfactant at oil/water interface and Ostwald ripening. The droplet size distribution and zeta potential value of the emulsified oil droplets produced at the CMC were the most stable over a month of storage. No significant changes in the emulsified droplet size occurred when the pH conditions varied from pH 3 to 10. The emulsified droplets images obtained from transmission electron microscopy analysis showed a reduction in the layer thickness of the surfactant from 30 to 10 nm in acidic condition and 30 to 19 nm in alkaline condition. The agarwood oil emulsification at CMC value enhance the stability of chemically unstable compounds from degradation. Trans Tech Publications 2019-03 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/82231/1/Stabilisation%20of%20.pdf Abu Bakar, Noor Fitrah and Naim, Mohd Nazli and Boon, Yih Tien and Lenggoro, Wuled and Ahmad, Noraini (2019) Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant. Key Engineering Materials, 797. pp. 186-195. ISSN 1662-9795 10.4028/www.scientific.net/KEM.797.186
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Owing to the annually increasing market value of pure agarwood oil, the extractedagarwood oil from Aquilaria malaccensis was emulsified in an aqueous solution using non-ionic surfactant (Tween 80). The surfactant concentration of 0.0167% was determined as the criticalmicelle concentration (CMC) with an interfacial tension value of 0.014 mNm-1. The adsorption of surfactant at the oil/water interface at the CMC value, however, reduced the zeta potential of the emulsified oil from –45 to –43 mV, and increased its size from 85 to 89 nm. Outside of the CMC value, the emulsified oil droplets tended to coalesce, owing to insufficient coverage of the surfactant at oil/water interface and Ostwald ripening. The droplet size distribution and zeta potential value of the emulsified oil droplets produced at the CMC were the most stable over a month of storage. No significant changes in the emulsified droplet size occurred when the pH conditions varied from pH 3 to 10. The emulsified droplets images obtained from transmission electron microscopy analysis showed a reduction in the layer thickness of the surfactant from 30 to 10 nm in acidic condition and 30 to 19 nm in alkaline condition. The agarwood oil emulsification at CMC value enhance the stability of chemically unstable compounds from degradation.
format Article
author Abu Bakar, Noor Fitrah
Naim, Mohd Nazli
Boon, Yih Tien
Lenggoro, Wuled
Ahmad, Noraini
spellingShingle Abu Bakar, Noor Fitrah
Naim, Mohd Nazli
Boon, Yih Tien
Lenggoro, Wuled
Ahmad, Noraini
Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant
author_facet Abu Bakar, Noor Fitrah
Naim, Mohd Nazli
Boon, Yih Tien
Lenggoro, Wuled
Ahmad, Noraini
author_sort Abu Bakar, Noor Fitrah
title Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant
title_short Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant
title_full Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant
title_fullStr Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant
title_full_unstemmed Stabilisation of emulsified Agarwood oil in an aqueous system using non-ionic surfactant
title_sort stabilisation of emulsified agarwood oil in an aqueous system using non-ionic surfactant
publisher Trans Tech Publications
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/82231/1/Stabilisation%20of%20.pdf
http://psasir.upm.edu.my/id/eprint/82231/
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score 13.211869

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