Characterization of pickering emulsion by SCFAs-modified debranched starch and a potent for delivering encapsulated bioactive compound

Rui Wang, Mei Li, Min Liu, Anqi Wang, Padraig Strappe, Christopher Blanchard, Zhongkai Zhou

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The Pickering emulsion was prepared by short-chain fatty acids (SCFAs) esterified debranched starch. The microstructure, particle size distribution, rheological properties and stability of the emulsions showed that the introduction of acyl groups improved the ability of starch to stabilize the emulsions, in which the butyrylated starch with longer acyl side chains exhibited higher emulsifying ability compared to acetylated and propionylated starches. Pickering emulsions stabilized with butyrylated starch as stabilizer have better stability after 30 days of storage. The particle size distribution of SCFAs-esterified starch emulsions with enzymatic debranching pretreatment was more concentrated and the droplet size was further reduced, which improved the instability factors such as flocculation, agglomeration or Ostwald ripening of emulsions induced by conventional SCFAs-esterified emulsions and further improved the stability of SCFAs-esterified emulsions. More importantly, butyrylated starch (with or without debranched pretreatment) emulsions exhibited smaller and more uniform droplet shapes and higher curcumin encapsulation efficiency (EE%) in SCFAs-esterified starch emulsions, and the EE% of curcumin in debranched butyrylated starch emulsion increasing from 10.04 % in native starch emulsions to 50.70 %.
Original languageEnglish
Article number123164
Pages (from-to)1-11
Number of pages11
JournalInternational Journal of Biological Macromolecules
Volume231
Early online date05 Jan 2023
DOIs
Publication statusPublished - 15 Mar 2023

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