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Tailored rigidity of W/O pickering emulsions using diacylglycerol-based surface-active solid lipid nanoparticles


Li, Guoyan and Lee, Wan Jun and Tan, Chin Ping and Lai, Oi Ming and Wang, Yong and Qiu, Chaoying (2021) Tailored rigidity of W/O pickering emulsions using diacylglycerol-based surface-active solid lipid nanoparticles. Food & Function, 12 (23). 11732 - 11746. ISSN 2042-6496; ESSN: 2042-650X


Pickering water-in-oil (W/O) emulsions were fabricated by using medium-long chain diacylglycerol (MLCD)-based solid lipid nanoparticles (SLNs) and the connection between the characteristics of the SLNs and the colloidal stability of the emulsions was established. Via melt-emulsification and ultrasonication, MLCD-based SLNs with particle sizes of 120–300 nm were obtained with or without other surfactants. The particle size of the SLNs was influenced by the chemical properties of the surfactants, and surfactants decreased the contact angle of SLNs at the oil–water interface. Gelation was observed in SLNs modified by sodium stearoyl lactylate and lecithin, whereas the addition of Tween 20 resulted in a homogeneous SLN solution. The adsorption of surfactants onto SLN surfaces caused the production of higher amounts of α crystals accompanied by delayed crystallization onset which contributed to the reduction of particle size, interfacial tension and oil wetting ability. The W/O emulsions with higher rigidity and physical stability can be obtained by varying surfactant types and by increasing SLN mass ratios to 60%, whereby more SLNs are adsorbed at the droplet surface as a Pickering stabilizer. This study provides useful insights for the development of diacylglycerol-based SLNs and Pickering W/O emulsions which have great potential for food, cosmetic and pharmaceutical applications.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Biotechnology and Biomolecular Sciences
Faculty of Food Science and Technology
DOI Number: https://doi.org/10.1039/D1FO01883C
Publisher: Royal Society of Chemistry
Depositing User: Ms. Che Wa Zakaria
Date Deposited: 02 Feb 2023 07:29
Last Modified: 02 Feb 2023 07:29
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1039/D1FO01883C
URI: http://psasir.upm.edu.my/id/eprint/95287
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