Effect of Natural Preservative Combinations on the Preservation of Duck Meat

In order to improve the quality of duck meat products, extend the shelf life and meet people’s demand for delicious and safe food, four preservatives, namely chitosan, tea polyphenol, lysozyme and nisin, were selected for the coating treatment of duck meat in this study. Their combinations were optimized using one-factor-at-a-time (OFAT) method and response surface methodology (RSM). The results showed that the shelf life of duck meat added with 1.12 g/100 mL chitosan, 0.55 g/100 mL tea polyphenols, 0.19 g/100 mL lysozyme, and 0.69 g/100 mL nisin was 12 days at 4 ℃, which was 7 days longer than that of control group. The total viable count was 5.810 (lg (CFU/g)) at the end of the shelf life.