title: Optimising the Encapsulation of an Aqueous Bitter Melon Extract by Spray-Drying.
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.
authors.affiliation: School of Environmental and Life Sciences, University of Newcastle, New South Wales 2258, Australia. sing.p.tan@uon.edu.au.
authors.forename: Sing Pei
authors.initials: SP
authors.lastname: Tan
authors.affiliation: Faculty of Food Science and Technology, Nong Lam University, Ho Chi Minh city, Vietnam. khachantuyen@hcmuaf.edu.vn.
authors.forename: Tuyen Chan
authors.initials: TC
authors.lastname: Kha
authors.affiliation: School of Environmental and Life Sciences, University of Newcastle, New South Wales 2258, Australia. sophie.parks@dpi.nsw.gov.au.|Central Coast Primary Industries Centre, NSW Department of Primary Industries, New South Wales 2258, Australia. sophie.parks@dpi.nsw.gov.au.
authors.forename: Sophie
authors.initials: S
authors.lastname: Parks
authors.affiliation: Faculty of Bioscience Engineering, Ghent University Global Campus, Incheon 406-840, Korea. costas.stathopoulos@ghent.ac.kr.
authors.forename: Costas
authors.initials: C
authors.lastname: Stathopoulos
authors.affiliation: School of Environmental and Life Sciences, University of Newcastle, New South Wales 2258, Australia. paul.roach@newcastle.edu.au.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Roach
keywords: bitter melon; encapsulation; gum Arabic; maltodextrin; response surface methodology; spray drying