4.7 Article

Pickering emulsions stabilized by zein-proanthocyanidins-pectin ternary composites (ZPAAPs): Construction and delivery studies

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FOOD CHEMISTRY
卷 404, 期 -, 页码 -

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ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.134642

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Emulsions stabilized; Pickering emulsion; Ternary composites; Delivery

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This study constructed zein-proanthocyanidins-pectin ternary composites (ZPAAPs) as stabilizer to establish Pickering emulsions with potential delivery capacity. The emulsion appeared pink and remained stable during long-term storage in the range of 0.1 to 0.7 oil phase. CLSM showed that the oil droplets were coated with a covering layer formed by ZPAAPs, effectively preventing droplet congregation. The rheological results indicated that ZPAAPEs had an elastic gel-like structure. Additionally, ZPAAPEs still contained 54.4% curcumin after storage for 15 days, and the bioavailability of curcumin was increased to 39.7% +/- 0.3. These studies may contribute to the controllable fabrication of Pickering emulsions for nutrient delivery in the food and pharmaceutical fields.
Proanthocyanidins (Pas) are widely used in the preparation of functional foods due to their diverse biological activities. Taking advantage of the effect of Pas on the stability of Pickering emulsions, this study constructed the zein-proanthocyanidins-pectin ternary composites (ZPAAPs) as stabilizer to establish Pickering emulsions with potential delivery capacity. The appearance of the emulsion was pink which could be found in visual observation. The emulsion was stable during long-term storage in the range of 0.1 similar to 0.7 oil phase. CLSM showed that the oil droplets were coated with covering layer formed by ZPAAPs, which effectively prevented droplets congregating. The rheological results indicated that ZPAAPEs had elastic gel-like structure. In addition, ZPAAPEs still contained 54.4 % curcumin after storage for 15 d. And the bioavailability of curcumin was increased to 39.7 % +/- 0.3. These studies may contribute to the controllable fabrication of Pickering emulsions for nutrient delivery in the food and pharmaceutical fields.

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