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Physical and Antimicrobial Properties of Nano-ZnO-loaded Nanoliposomes Prepared by Thin Layer Hydration-Sonication and Heating Methods

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Abstract

Nano-ZnO loaded nanoliposomes were prepared through thin layer hydration-sonication and heating methods and characterized by antimicrobial activity and physical property evaluations. The influence of lecithin: nano-ZnO ratio (5:1, 15:1, and 25:1 w/w) and the homogenization speed (5000 and 20,000 rpm) on the physical and antimicrobial properties of nanoliposomes were evaluated. Antimicrobial activities of nano-ZnO loaded nanoliposomes and free nano-ZnO were evaluated against some gram-positive bacteria (Staphylococcus aureus ATCC 25923, Bacillus ceruse ATCC 11778), gram-negative bacteria (Escherichia coli ATCC 2592, Pseudomonas aeruginosa ATCC 9027), and fungal strains (Aspergillus niger IBRC-M 30095, Botrytis cinerea IBRC-M 30162) by the determination of minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and minimum fungicidal concentration (MFC). Well-dispersed ZnO nanoparticles in aqueous solutions were achieved by thin layer hydration-sonication and heating techniques. Moreover, MIC, MBC, and MFC values of nano-ZnO reduced, followed by encapsulation into nanoliposomes, significantly. The highest antimicrobial activity, encapsulation efficiency (85.9%), and absolute zeta potential (37.85 mV), as well as the smallest particle size (300.5 nm) and polydispersity index (0.21) of the nano-ZnO loaded nanoliposomes, were obtained by thin layer hydration-sonication technique at 20,000 rpm and with lecithin: nano-ZnO ratio of 25:1 (w/w) (p < 0.05).

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Data supporting the findings of this study are available upon request from the corresponding author.

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Acknowledgements

We would like to express our very great appreciation to all who help us.

Funding

Partial financial support was received from Bu-Ali Sina University.

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Parvin Souri: investigation. Aryou Emamifar: supervision and writing–review and editing. Nafiseh Davati: advisor.

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Correspondence to Aryou Emamifar.

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Souri, P., Emamifar, A. & Davati, N. Physical and Antimicrobial Properties of Nano-ZnO-loaded Nanoliposomes Prepared by Thin Layer Hydration-Sonication and Heating Methods. Food Bioprocess Technol 16, 1822–1836 (2023). https://doi.org/10.1007/s11947-023-03032-1

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  • DOI: https://doi.org/10.1007/s11947-023-03032-1

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