In order to figure out the effects of different essential oils on the properties of gelatin composite film, five essential oil including ginger essential oil, garlic essential oil, cinnamon essential oil, mint essential oil and thyme essential oil were used as modifiers to prepare antimicrobial gelatin composite film. The effects of different essential oils on the antibacterial activity, physical properties and sensory analysis of the composite film were studied. The results showed that, film prepared with gingere essential oil, garlic essential oil and cinnamon essential oil had stronger antimicrobial activity and good physical properties compared with the other samples. These properties including lower value in film thickness, water vapor permeability, elongation at break and water solubility, higher value in tensile strength and opacity. However, the results of sensory evaluation showed that the garlic essential oil film and cinnamon essential oil film had prominent smell of essential oil and were not suitable for food packaging film. Therefore, ginger essential oil was more suitable as biological modifier for the preparation of antimicrobial film.
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