Preparation of active film based on cinnamon essential oil into β-cyclodextrin with high hydrophobic and its preservation for griskin

The high volatilization of essential oil caused low antibacterial efficiency and a poor preservation effect of food-active packaging. Herein, the active sustained-release microencapsulated inclusion was synthesized by using β-cyclodextrin (β-CD) as the wall material and CEO as the core material. The inclusion rate of β-CD@CEO was 83.08 %, the embedding efficiency was 86.80 %, and the oil yield was 12.65 %. Then different concentrations of the β-CD@CEO complex were encapsulated in the PVDF nanofibers by uniaxial electrospinning technique. All the WCA results of the nanofiber film were greater than 90°.The release behavior of the CEO into the film was relatively consistent with the first-order kinetic model. Similarly, the film presented the inhibition zone against E. coli and S. aureus of 17.1 mm and 16.7 mm, respectively. And the cell viability rate of the developed films was more than 80 %. Finally, the PVDF nanofibrous film with β-CD@CEO (4.5 %) can be used for griskin preservation to prolong the shelf life for 2 days at 4 °C. Thus, the developed sustained-release packaging film with high hydrophobicity could be suitable for potential application in high-humidity environments.