Optimising the encapsulation of an aqueous bitter melon extract by spray-drying

Sing Pei Tan, Tuyen Chan Kha, Sophie Parks, Costas Stathopoulos, Paul D. Roach

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)400-419
Number of pages20
JournalFoods
Volume4
Issue number3
DOIs
Publication statusPublished - Sep 2015
Externally publishedYes

Keywords

  • Bitter melon
  • Encapsulation
  • Gum Arabic
  • Maltodextrin
  • Response surface methodology
  • Spray drying

ASJC Scopus subject areas

  • Food Science
  • Microbiology
  • Health(social science)
  • Health Professions (miscellaneous)
  • Plant Science

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