壳聚糖膜剂的研制及其对辣椒的保鲜效果

Effect of Chitosan Film Coating on Pepper Storage

用壳聚糖作为辣椒的保鲜膜剂 ,对其涂膜方式、成膜条件及防霉剂筛选进行试验 ,结果表明 ,采用 2次浸涂效果最好 ;最佳成膜条件 :壳聚糖用量 2 .44 %～ 2 .93%,涂膜液pH 5 .0 1～ 5 .71,涂膜温度 2 3.5～ 2 8.5℃ ;选择脱氢醋酸钠作为保鲜膜剂中的防霉剂。该保鲜剂配方 :壳聚糖 2 .5 %,乙醇适量 ,吐温 80两滴 ,脱氢醋酸钠适量。

The optimum condition of making chitosan film was 2.44%-2.93% chitosan;pH 5.01-5.71,temperature 23.5-28.5℃. The best result was obtained by coating pepper twice.The sodium dehydroacetate was used for mold inhibitor. The formula of the film preservative is 2.5 % chitosan,an appropriate amount of ethanol and sodium dehydroacetate,two drops of Tween 80.