壳聚糖涂膜保鲜杨桃的研究

研究了不同组成的壳聚糖涂膜保鲜剂对杨桃的保鲜效果。结果表明：壳聚糖涂膜剂对杨桃具有较好的保鲜效果，浸涂保鲜剂的杨桃在贮藏期间其水分、总酸和维生素C的含量均高于对照，而还原糖含量低于对照。壳聚糖涂膜保鲜剂较适宜的配方为：壳聚糖2．5％，乙酸1．5％，甘油1.0％，单硬脂酸甘油酯0.3％，水94．7％。

Research on Preservation of Carambola by Chitosan Film

Different formulation of chitosan film preservative on carambola fresh keeping was studied. The results chitosan had good preserving effect on carambola. Water, total acid and vitamin C concentration of the carambola preservative were higher than that of comparison, and reducing sugar was lower. The feasible composition of chitosan film was 2.5 % of chitosan, 1.5 % of acetic acid, 1.0 % of glycerin, 0.3 % of glycerol monostearate and 94.7 % of water. showed that filmed with preservative