Effects of storage and yogurt matrix on the stability of tocotrienols encapsulated in chitosan-alginate microcapsules

Phui Yee Tan, Tai Boon Tan, Hon Weng Chang, Beng Ti Tey, Eng Seng Chan, Oi Ming Lai, Badlishah Sham Baharin, Imededdine Arbi Nehdi, Chin Ping Tan

Research output: Contribution to journalArticleResearchpeer-review

30 Citations (Scopus)

Abstract

Tocotrienol microcapsules (TM) were formed by firstly preparing Pickering emulsion containing tocotrienols, which was then gelled into microcapsules using alginate and chitosan. In this study, we examined the stability of TM during storage and when applied into a model food system, i.e. yogurt. During storage at 40 °C, TM displayed remarkably lower tocotrienols loss (50.8%) as compared to non-encapsulated tocotrienols in bulk oil (87.5%). When the tocotrienols were incorporated into yogurt, the TM and bulk oil forms showed a loss of 23.5% and 81.0%, respectively. Generally, the tocotrienols were stable in the TM form and showed highest stability when these TM were added into yogurt. δ-Tocotrienol was the most stable isomer in both forms during storage and when incorporated into yogurt. The addition of TM into yogurt caused minimal changes in the yogurt's color and texture but slightly altered the yogurt's viscosity.

Original languageEnglish
Pages (from-to)79-85
Number of pages7
JournalFood Chemistry
Volume241
DOIs
Publication statusPublished - 15 Feb 2018

Keywords

  • Alginate
  • Chitosan
  • Gelation
  • Oxidation
  • Self-assembled
  • Stability

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