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Tailoring Olive Oil Microcapsules via Microfluidization of Pickering o/w Emulsions

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Abstract

In this work, surfactant-modified starches were prepared by reactive extrusion (REX) and used as stabilizers for olive oil-in-water Pickering emulsions. The referred starches are waxy maize starch phosphate (P-MS), octenyl succinic anhydride maize starch (OSA-MS), and octenyl succinic anhydride rice starch (OSA-RS). Pickering emulsions were emulsified by microfluidization and spray-dried to evaluate the efficiency of encapsulation and the protective effect of starch derivatives in the encapsulated olive oil. Results showed that OSA-RS presented the smallest particle size and the most electronegative \(\zeta\)-potential. Among the considered starches, OSA-RS possesses the best characteristics as surfactant to improve emulsification and digestibility of oil-in-water Pickering emulsions. On the other hand, P-MS has the ideal properties to be used as wall material for spray drying to increase oil stability and reduce digestibility of microcapsules.

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Data Availability Statement

Raw data were generated at the IPN facilities. Derived data supporting the findings of this study are available from the corresponding author upon request.

Abbreviations

OSA-MS:

Octenyl Succinic Anhydride Maize Starch

SD-OSA-MS:

Spray-Dried O/W emulsions of Octenyl Succinic Anhydride Maize Starch

OSA-RS:

Octenyl Succinic Anhydride Rice Starch

SD-OSA-RS:

Spray-Dried O/W Octenyl Succinic Anhydride Rice Starch

P-MS:

waxy maize starch phosphate

SD-P-MS:

Spray-Dried O/W waxy maize starch phosphate

EVOO:

Extra Virgin Olive Oil

REX:

Reactive Extrusion

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Acknowledgements

The authors acknowledge the experimental support of the CNMN-IPN for the realization of the present work. This research was funded by SIP projects: 20211607 (Y.V.G.-T.) and 20211671 (V.B.-F.).

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Correspondence to Yunia Verónica García-Tejeda.

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The authors declare that they have no conflict of interest.

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Espinosa-Solís, V., García-Tejeda, Y.V., Portilla-Rivera, O.M. et al. Tailoring Olive Oil Microcapsules via Microfluidization of Pickering o/w Emulsions. Food Bioprocess Technol 14, 1835–1843 (2021). https://doi.org/10.1007/s11947-021-02673-4

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  • DOI: https://doi.org/10.1007/s11947-021-02673-4

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