Abstract:With the gradual increase in consumers＇ demand for food safety，the development of natural food cling film materials has been gradually emphasized.In this paper，cellulose nanofibrils（CNF）with an average width of 7.3 nm and an average length of 156.3 nm were prepared by the oxidation of 2，2，6，6-tetramethyl-1-piperidinyloxy（TEMPO）using loofah as raw material.The CS-GP-CNF composite membrane was prepared by cross-linking CNF with CS according to 0%，1%，2%，3%，and 6% of the mass of chitosan（CS），and genipin（GP）was used as cross-linking agent.The surface of the composite membrane was basically homogeneous，smooth，and bubble-free，and a small amount of nodular morphology appeared on the surface of the composite membrane with the increase in CNF addition.In addition，the CS-GP-CNF composite membranes possessed good water vapor barrier properties，which were all lower than 1.15×10-11 g/（s·m·Pa）.CS-GP-CNF6 was applied to preserve chicken.The results showed that the CS-GP-CNF6 composite film could effectively slow down the rise of colony number and volatile saline nitrogen content of chicken during storage at 4 °C and effectively prolong its shelf life.Therefore，CS-GP-CNF composite film could be used as a potential food packaging film for food preservation.