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Foods 2015, 4(3), 400-419; doi:10.3390/foods4030400

Optimising the Encapsulation of an Aqueous Bitter Melon Extract by Spray-Drying

1
School of Environmental and Life Sciences, University of Newcastle, New South Wales 2258, Australia
2
Faculty of Food Science and Technology, Nong Lam University, Ho Chi Minh city, Vietnam
3
Central Coast Primary Industries Centre, NSW Department of Primary Industries, New South Wales 2258, Australia
4
Faculty of Bioscience Engineering, Ghent University Global Campus, Incheon 406-840, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Wijitha Senadeera
Received: 26 July 2015 / Accepted: 1 September 2015 / Published: 9 September 2015
(This article belongs to the Special Issue Food Modelling)
View Full-Text   |   Download PDF [1042 KB, uploaded 9 September 2015]   |  

Abstract

Our aim was to optimise the encapsulation of an aqueous bitter melon extract by spray-drying with maltodextrin (MD) and gum Arabic (GA). The response surface methodology models accurately predicted the process yield and retentions of bioactive concentrations and activity (R2 > 0.87). The optimal formulation was predicted and validated as 35% (w/w) stock solution (MD:GA, 1:1) and a ratio of 1.5:1 g/g of the extract to the stock solution. The spray-dried powder had a high process yield (66.2% ± 9.4%) and high retention (>79.5% ± 8.4%) and the quality of the powder was high. Therefore, the bitter melon extract was well encapsulated into a powder using MD/GA and spray-drying. View Full-Text
Keywords: bitter melon; encapsulation; maltodextrin; gum Arabic; spray drying; response surface methodology bitter melon; encapsulation; maltodextrin; gum Arabic; spray drying; response surface methodology
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Tan, S.P.; Kha, T.C.; Parks, S.; Stathopoulos, C.; Roach, P.D. Optimising the Encapsulation of an Aqueous Bitter Melon Extract by Spray-Drying. Foods 2015, 4, 400-419.

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