Chitin Oligosaccharide N,N′-Diacetylchitobiose (GlcNAc2) as Antimicrobial Coating against Listeria monocytogenes on Ready-to-Eat Shrimp

N,N′-diacetylchitobiose, also known as GlcNAc2, is a chitin oligosaccharide and reported to possess antimicrobial activity against pathogenic bacteria. In this study, 1% (w/v) GlcNAc2 solution was applied on ready-to-eat (RTE) shrimp evaluated an coating Listeria monocytogenes during storage at 4 °C for 16 days. Texture properties, colour, TBARS values, moisture content bacterial counts were monitored analysed every four The results indicated that the retarded changes in texture values of RTE storage. presence showed no significant colour contrast control. However, growth L. inoculated GlcNAc2-coated slower than control sample with highest log reduction 0.5 CFU/mL being observed. This study used able inhibit monocytogenes, while maintaining quality refrigerated