Compared with traditional liquid-liquid embedding method and solid-liquid embedding method of inclusion complexes of β-cyclodextrin (β-CD) inclusion of essential oil to form stable properties, the gas-liquid embedding method was applied to encapsulate vaporized essential oil (IvEO), with β-CD as wall materials so that core and wall materials molecules are in active state during complexing process. At optimal conditions with a mass ratio of 1:10, temperature of 80°C, time of 1 h, the β-CD-IvEO inclusion complexes (β-CD-IvEO-ICs) had an encapsulation efficiency (EE) of 84.55 ± 2.31%. Fourier transform infrared spectroscopy (FTIR) revealed the encapsulation of IvEO into inclusion complexes, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) demonstrated the enhanced thermal stability of IvEO after embedding. Furthermore, the reducing power and 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (PTIO)-scavenging capacity displayed certain capacity of antioxidation in a short time but stronger antioxidative activities as reaction time was extended. The diameter of growth zone (DGZ) indicated stronger antibacterial activity of β-CD-IvEO-ICs against , , , and . Moreover, the β-CD-IvEO-ICs could induce the bacteria producing more reactive oxygen species (ROS) than IvEO, resulting in bacterial death.
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| http://dx.doi.org/10.1002/fsn3.2997 | DOI Listing |
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