Self-assembly of Tween 80 micelles as nanocargos for oregano and trans-cinnamaldehyde plant-derived compounds. (15th October 2020)

• Record Type: Journal Article
• Authors: Sedaghat Doost, Ali; Devlieghere, Frank; Stevens, Christian V.; Claeys, Myriam; Van der Meeren, Paul
• Is Part Of: Food chemistry. Volume 327(2020)
• Publication Date: 2020-10-15
• Subjects: Spontaneous emulsification -- Self-assembly -- Swollen micelles -- Tween 80 -- Oregano essential oil -- Trans-cinnamaldehyde; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2020.126970
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Microemulsions based on Tween 80 (T80) were studied. Plant-derived hydrophobic compounds were encapsulated in the T80 nanocarriers. The designed microemulsions had reasonable physicochemical stability. Encapsulation significantly improved the antibacterial properties of the oils. Abstract: The self-assembly of Tween 80 (T80) micelles loaded with plant-based oregano essential oil (OR) and trans -cinnamaldehyde (TCA) was studied. The effect of different factors, including the surfactant to oil ratio, the presence of sodium chloride, thermal treatment, and dilution on their formation and physicochemical stability was evaluated. The creation of nano-cargos was confirmed by TEM. The self-associated structures had z-average droplet diameters of 92 to 337 nm without any energy input. Whereas addition of 10% (w/v) NaCl prevented the formation of oregano essential oil nano-assemblies of T80, swollen micelles containing TCA were successfully produced. Moreover, the OR or TCA loaded-micelles had only a slight droplet size variation upon thermal treatment. Ultimately, their antibacterial activity analysis against some food pathogens revealed that the encapsulation of OR and TCA within micelles crucially improved their antibacterial activity. These straightforward and cost-effective designed systems can be applicable in different products, including foods and agrochemicals.