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Effects of different wall materials on the physicochemical properties and oxidative stability of spray-dried microencapsulated red-fleshed Pitaya (Hylocereus polyrhizus) seed oil.


Citation

Hong, Kwong Lim and Tan, Chin Ping and Bakar, Jamilah and Siou, Pei Ng (2012) Effects of different wall materials on the physicochemical properties and oxidative stability of spray-dried microencapsulated red-fleshed Pitaya (Hylocereus polyrhizus) seed oil. Food and Bioprocess Technology, 5 (4). pp. 1220-1227. ISSN 1935-5130; ESSN:1935-5149

Abstract / Synopsis

The aim of this research was to investigate the influence of the composition of the wall material on the encapsulation and stability of microencapsulated red-fleshed pitaya seed oil. Hylocereus polyrhizus seed oil was homogenized with various wall material solutions at a core/wall material ratio of 0.33 and was microencapsulated by spray-drying. The microstructure and morphology of pitaya seed oil powder (PSOP) were observed using a scanning electron microscope (SEM). PSOP encapsulated with gum Arabic exhibited a lower degree of microencapsulation efficiency (MEE; 77.61–85.3%) compared to PSOP encapsulated with proteinaceous bases (90.12–98.06%). The study on oil retention revealed that sodium caseinate > whey protein > gum Arabic as effective wall materials for pitaya seed oil encapsulation. The effects of different wall systems on the oxidation stability of PSOP were studied under accelerated storage conditions; the peroxide value (POV) was determined throughout the test interval at several storage times. This study indicates that the use of lactose as wall material is able to increase the oxidation stability of PSOP; however, further research is needed to evaluate its antioxidative retention toward the oxidative stability of PSOP.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
DOI Number: https://doi.org/10.1007/s11947-011-0555-1
Publisher: Springer Verlag
Keywords: Dragon fruit; Hylocereus polyrhizus; Pitaya; Seed oil; Microencapsulation; Spray-drying; Lipid oxidation.
Depositing User: Nur Farahin Ramli
Date Deposited: 08 Oct 2013 22:38
Last Modified: 14 Sep 2015 08:19
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s11947-011-0555-1
URI: http://psasir.upm.edu.my/id/eprint/24207
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