Ultrasound-assisted encapsulation of Pandan (Pandanus amaryllifolius) extract

Omer, Noridayu and Choo, Yeun-Mun and Ahmad, Noraini and Yusof, Nor Saadah Mohd (2021) Ultrasound-assisted encapsulation of Pandan (Pandanus amaryllifolius) extract. Ultrasonics Sonochemistry, 79. ISSN 1350-4177, DOI https://doi.org/10.1016/j.ultsonch.2021.105793.

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Pandan (Pandanus amaryllifolius) is commonly used as a food ingredient in Southeast Asia due to its delicious flavor, appetizing aroma and bright green colour. Pandan plant is uniquely found only in certain parts of the world. Despite its increasing popularity worldwide, its export market is limited by practical issues. One of the main problems for exporting Pandan to global market is its stability during transport. Due to the volatility of its active constituent, the functional properties of Pandan are lost during storage and shipment. In this study, we explored the ability of ultrasound processing technology to encapsulate the aromatic Pandan extract using lysozyme or chitosan as a shell material. 20 kHz ultrasonicator was used to encapsulate the pandan extract at 150 W of applied power. Two parameters, the ultrasonic probe tip and the core-to-shell ratio were varied to control the properties of the encapsulates. The diameters of the probe tip used were 0.3 and 1.0 cm. The core-to shell volume ratios used were 1:160 and 1:40. The size distribution and the stability of the synthesized micro spheres were characterized to understand and explore the possible parameters variation impact. Both size and size distribution of the microspheres were found to be influenced by the parameters varied to certain extent. The results showed that the mean size of the microspheres was generally smallest when using 1 cm probe tip with lower core-to-shell volume ratio but largest when using the 3 mm tip with higher core-to-shell volume ratio. This indicates that the sonication parameters could be fine-tuned to achieve the encapsulation of Pandan extract for storage and export. The pandan-encapsulated microspheres were also found to be stable during storage at least for one month.

Item Type: Article
Funders: Fundamental Research Grant Scheme (FRGS) from the Ministry of Higher Education Malaysia (FP0382019A), RU Grant (RF026B-2018), University of Malaya Centre for Ionic Liquids (UMCiL), Ministry of Education, Malaysia
Uncontrolled Keywords: Encapsulation; Ultrasound; Pandan; Chitosan microspheres; Lysozyme microspheres
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 16 Apr 2022 01:28
Last Modified: 16 Apr 2022 01:28
URI: http://eprints.um.edu.my/id/eprint/26715

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