壳聚糖涂膜处理对鲜切桃的保鲜效果  

Effect of Chitosan Coating on Quality Maintenance of Fresh-cut Peach

作　　者：李芳菲 马文瑶[1] 李艳梅[1] 李晓鸽 廖秋实 杨英军[1] LI Fangfei;MA Wenyao;LI Yanmei;LI Xiaoge;LIAO Qiushi;YANG Yingjun(School of Forestry,Henan University of Science and Technology,Luoyang 411QQ3,China)

机构地区：[1]河南科技大学林学院,河南洛阳471003

出　　处：《海南师范大学学报（自然科学版）》2018年第1期44-49,共6页Journal of Hainan Normal University（Natural Science）

基　　金：洛阳市科技发展计划项目(1402011A);河南省教育厅重点项目(13A210873)

摘　　要：以中华寿桃和双红艳桃为试验材料,研究不同浓度(0.5%、1.0%和1.5%)壳聚糖涂膜处理鲜切桃的保鲜效果.试验采用壳聚糖溶液浸果后晾干装盒,用保鲜膜包被并放入5℃冰箱中.每2 d观察一次,观察至第10 d,并对鲜切桃的腐烂率、色差等7项生理指标进行测定.结果表明:在不同浓度的壳聚糖涂膜处理下,鲜切桃的各项生理指标都优于未经壳聚糖涂膜处理的对照,表明各个处理对于鲜切桃都具有一定的保鲜作用.其中1.0%壳聚糖涂膜对鲜切桃保鲜效果最好,它能有效地抑制POD、PPO活性,在保持果实色泽和硬度、降低果实酸度和腐烂率、减缓可溶性固形物分解等方面优于其他处理,可使果实货架期达到4~8 d.The effects of different concentrations(0.5%,1%and 1.5%)of chitosan coating solution on fresh-cut peach were studied with Chinese peach and double Hongyan peach as test materials.In the experiment,the method of direct fruit soaking was adopted.After fruit treatment,the fruit was dried and packed,wrapped in fresh-keeping film and placed in the refrigerator at 5°C,and observed once per 2 d to the 10th d.The 7 physiological indexes such as decay rate and color of peach were measured.The results show that under the different concentrations of chitosan coating solution,the physiolog-ical indexes of peach are better than the control,indicating that each treatment group has some preservation effect on fresh peaches.1%chitosan coating solution has the best preservation effect on fresh-cut peach.It can effectively inhibit the ac-tivity of POD and PPO,and is superior to other treatments in maintaining fruit color and hardness,reducing fruit acidity and decay rate,slowing down the material decomposition,so that the shelf life of fruits can reach 4?8 d.

关 键 词：壳聚糖 鲜切桃 保鲜 

分 类 号：Q599[生物学—生物化学] S662.1[农业科学—果树学]