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Sonoprocessing is an effective strategy to encapsulate fisetin into Saccharomyces cerevisiae cells

Abstract : The encapsulation of fisetin into S. cerevisiae cells through sonoporation coupled with drying is reported for the first time in the literature. To establish the best conditions to maximize the amount of internalized fisetin, the cell density (5-10% w/v), fisetin concentration (1-3 mg/mL), acoustic energy density (0-333.3 W/L), and drying method (freeze-drying and spray drying) were analyzed through a Box-Behnken experimental design (BBD) coupled with response surface methodology (RSM). Higher encapsulation efficiency (EE) was achieved with a cell density of 10% w/v, while fisetin concentration of 3 mg/mL favored the encapsulation yield (EY) and antioxidant activity (AA). Higher EE (67.7%), EY (25.7 mg/g), and AA (90%) were registered when an acoustic density of 333.3 W/L was used. Furthermore, both drying protocols promoted fisetin encapsulation, but through spray drying, the EE, EY, and AA were 11.5%, 11.1%, and 26.6% higher than via freeze-drying, respectively. This work proved that fully filled biocapsules were produced through sonoprocessing, and their morphology was influenced by the acoustic energy and drying process. Overall, these results open new perspectives for the application of sonoprocessing-assisted encapsulation, paving the way for developing innovative yeast-based delivery systems for lipophilic compounds such as fisetin. KEY POINTS: • Sonoprocessing improves the encapsulation of fisetin into S. cerevisiae cells • Spray drying promotes fisetin loading into yeasts' intracellular space and cavities • Fisetin binding with yeast extracellular agents are favored by freeze-drying.
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https://hal-agrosup-dijon.archives-ouvertes.fr/hal-03850624
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Submitted on : Monday, November 14, 2022 - 9:10:25 AM
Last modification on : Monday, November 21, 2022 - 3:53:29 AM

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Eduardo Wagner Vasconcelos de Andrade, Sébastien Dupont, Laurent Beney, Marlinda Lobo de Souza, Roberta Targino Hoskin, et al.. Sonoprocessing is an effective strategy to encapsulate fisetin into Saccharomyces cerevisiae cells. Applied Microbiology and Biotechnology, 2022, ⟨10.1007/s00253-022-12214-4⟩. ⟨hal-03850624⟩

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