Study on the preparation of gelatin-chitosan-cinnamon essential oil natural film coating and its antibacterial effect.

The gelatin-chitosan-cinnamon essential oil natural coating solution was prepared by the self-assembly method, and the particle size of the natural coating solution and its encapsulation rate of cinnamon essential oil were used as indicators. On the basis of single factor test, orthogonal test was used to determine the optimal process for preparing natural coating solution. The antibacterial effect of the natural coating solution by the antibacterial circle method was studied. The results showed that the optimal process for the preparation of gelatin-chitosan-cinnamon essential oil natural coating solution was gelatin mass concentration of 6 mg/mL, chitosan mass concentration of 3 mg/mL, cinnamon essential oil mass concentration of 3 mg/mL, emulsifier mass concentration of 3 mg/mL, adjusting the pH of the solution to 4.5, rotating speed of 800 r/min, stirring time of 30 min. The particle size of natural coating solution was (236.54±18.32) nm, and the encapsulation rate of cinnamon essential oil was (46.78±2.61)%. And the antibacterial effect of the natural coating solution treatment group was better than that of the chitosan and gelatin-chitosan groups. The addition of cinnamon essential oil could improve the inhibition effect of gelatin-chitosan coating solution. [ABSTRACT FROM AUTHOR]