壳聚糖对灵武长枣保鲜效果研究

摘要

以灵武长枣为试材，在0±0.5℃、相对湿度90%的条件下，研究不同浓度（1%、2%、3%）壳聚糖涂膜处理对灵武长枣保鲜效果的影响。结果表明：壳聚糖涂膜处理对灵武长枣具有一定的保鲜作用，不同浓度的壳聚糖，保鲜效果不同，其中2%壳聚糖涂膜处理对灵武长枣的保鲜效果最佳，在贮藏末期，灵武长枣硬度最大，为11kg/cm2；失重率仅为9%，是对照处理的1/4；可滴定酸含量最高，为1.5%；相对电导率最小，为63%。%Effects of different concentrations (1%, 2%, 3%) of chitosan coating on quality of Lingwu long jujube were investigated at 0±0.5℃ with 90% Relative Humidity in this paper. The results showed that: all the treatments with chitosan coating had preservation effect on Lingwu long jujube, and the 2%concentration of chitosan coating had the best effect on Lingwu long jujube, at the end of storage, which firmness was 11kg/cm2, and weight loss rate of was only 9%. It is titratable acid content was the highest (1.5%), and the relative conduvtivity was the lowest (63%).