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以塘房桔为试材,为筛选能应用于塘房桔的可食性涂膜保鲜剂,采用单一和复配试验方法研究了壳聚糖-魔芋葡甘聚糖复合涂膜剂对塘房桔果实保鲜效果的影响,以塘房桔的失重率、呼吸强度及主要营养成分含量变化为考察指标。结果表明:最佳的复合涂膜浓度为魔芋葡甘聚糖0.6%,壳聚糖2.0%,复配比例为1∶1。在此条件下贮藏,复配膜能有效延迟果实呼吸高峰,降低呼吸强度,营养成分损耗降低,保持果实良好风味品质,可有效延长塘房桔的货架期。
To Tong Fang orange as the test material, for the screening can be applied to the Tang Fang orange edible coating preservative, using a single and compound test method of chitosan - konjac glucomannan composite coating agent Tang Fang orange The effect of preservation of fruits was studied by taking the changes of weight loss rate, respiration rate and content of main nutrients in Tangfang orange as index. The results showed that the optimum composite coating concentration was 0.6% of konjak glucomannan and 2.0% of chitosan, with a ratio of 1: 1. Under these conditions, the storage and reconstituted film can effectively delay the peak of fruit respiration, reduce the respiratory intensity, reduce the loss of nutrients and maintain the good flavor and quality of the fruit, which can effectively prolong the shelf life of Tangfang orange.