Effect of Chitosan Oligosaccharide on Preservation of Beef of Gelatin-Chitosan Composite Films

Abstract:

Chitosan-gelatin composite films were prepared. The effects of chitosan oligosaccharide on gelatin-chitosan composite films were evaluated. The mechanical，antioxidant，antibacterial properties and preservation of beef of the composite film were evaluated. The results showed that the tensile property of the film was increased，but the other mechanical properties were decreased. The antioxidant property and the antibacterial property of the film were improved greatly. The preservation effect of chitosan/gelatin/chitosan oligosaccharide composite film was improved greatly. The shelf life of beef can be extended for 6 days by chitosan oligosaccharide.