earticle

영어

Silk fibroin (SF) film containing catechin was prepared and the antimicrobial activity as well as physical propertyof the film was examined. Tensile strength of the SF film decreased with increasing concentration of catechin, and water vaporpermeability of the film decreased. The film’s antimicrobial activity against Escherichia coli O157:H7 increased withincreasing catechin concentration. Sausage samples were inoculated with E. coli O157:H7 and Listeria monocytogenes, andthe sausage packaged with the SF film containing catechin had a decrease in the populations of E. coli O157:H7 and L.monocytogenes by 0.83 and 0.85 log CFU/g after 12 days of storage, respectively, compared to the control. In addition, thesausage had a better quality than the control regarding lipid oxidation. Our results indicate that sausages can be packed withthe SF film containing catechin to extend shelf life.