Release kinetics of encapsulated herbal antioxidants during gelation process

Yim, Zhi Hui and Tiong, C. B. and Rachel Fran Mansa, and Pogaku, Ravindra and Chan, Eng Seng (2010) Release kinetics of encapsulated herbal antioxidants during gelation process. Journal of Applied Sciences, 10 (21). pp. 2668-2672. ISSN 1812-5654

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Official URL: http://dx.doi.org/10.3923/jas.2010.2668.2672

Abstract

Dripping-gelation method was used for encapsulation of aqueous herbal extract. This objective of this study was to determine the release kinetics of the antioxidants during the gelation process. The process variables studied were particle size, alginate M/G ratio, concentration, gelling cation concentration and extract strength. Results showed that under all studied variables, a sharp release of the encapsulated antioxidant was observed during the initial gelation period (i.e., in the first 20 min). This amounted to about 80% of the total antioxidants. After this time, the antioxidant release was significantly reduced. In general, the amount of antioxidant that could be retained within the beads after prolonged gelation time was about 10-20%. In conclusion, by using the encapsulation system, prolonged gelation time resulted in about 10-20%) encapsulation efficiency. © Asian Network for Scientific Information.

Item Type:Article
Uncontrolled Keywords:Antioxidants, Encapsulation, Gelation process, Herbal extract, Release kinetics
Subjects:?? TP155-156 ??
Divisions:SCHOOL > School of Engineering and Information Technology
ID Code:2092
Deposited By:IR Admin
Deposited On:08 Mar 2011 15:02
Last Modified:18 Feb 2015 16:53

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