Preparation and Properties of OSA Starch-Tannin-Chitosan Complex Pickering Emulsion
Pickering emulsion system was constructed with sodium starch octenyl succinate(OSA)-chi-tosan-tannic acid complex as stabilizer.The effects of OSA on particle size distribution,microstructure,water distribution,moisture-distribution,rheological properties and curcumin embedding effect of Picker-ing emulsion were studied.The results showed that the particle size of the emulsion decreased from 15.68 pm to 13.27 pm with the concentration of OSA starch from 2％to 10％.The particle size distribution was narrow and the particle size was uniform.The rheological results showed that the Pickering emulsion sta-bilized by OSA starch-tannin-chitosan complex formed an elastico-like structure(G'＞G'')and was a pseu-doplastic fluid.The embedding rate of curcumin reached 90％,which improved the utilization rate of cur-cumin.This study provides a new idea for the design of Pickering emulsion loaded with curcumin and other lipophilic functional components.
OSA starchTannic acidChitosanPickering emulsioncurcumin
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