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For the sake of developing fish skin gelatin and CaCO3 composite films with antioxidant activity, different concentration of carnosine was added to it. In addition, the mechanical properties, optical properties, surface topography, anti-microbial activity, antioxidant activity and preservation effect of carnosine-FSG-CaCO3 were also investigated and analyzed. The results indicated that the incorporation of carnosine caused interactions between gelatin and ingredients in carnosine, and the films showed increased thickness and elongation. After the accretion of carnosine, the films showed darker appearance, and decreased tensile strength, water solubility and water vapor permeability. Meanwhile, the inhibition to food oxidation and preservation effect enhanced, and the surfaces became rougher by AFM with the increase of concentration of carnosine. In summary, carnosine-FSG-CaCO3 composite films incorporated with carnosine presented application capacity in food packing and preservation.

Effect of Carnosine on Physico-Chemical and Antioxidant Activity Properties of FSG-CaCO3 Composite Films