热激与壳聚糖处理对青种枇杷的贮藏效果  

Storage Effects of Heat Shock and Chitosan Treatment on Green-variety Loquat

作　　者：王利芬[1] 黄文成[1] 徐珏[1] 郄红丽[2] 朱军贞[1] 

机构地区：[1]苏州大学金螳螂建筑与城市环境学院,江苏苏州215123 [2]南京农业大学园艺学院,江苏南京210095

出　　处：《安徽农业科学》2009年第6期2711-2712,2714,共3页Journal of Anhui Agricultural Sciences

基　　金：苏州市科技发展计划(科技专项)项目(ZXN0602)

摘　　要：[目的]为延长白沙枇杷的市场销售期提供技术资料。[方法]研究不同贮藏方式（A：热处理＋低温贮藏;B：1.5%壳聚糖处理＋低温贮藏：C：热处理＋1.5%壳聚糖处理＋低温贮藏;D：低温贮藏;E：常温贮藏）下青种白沙枇杷果实可溶性固形物及可滴定酸含量、失重、褐变等的变化。[结果]贮藏1-5 d时,各处理果实可溶性固形物含量均有所上升,之后呈下降-上升-下降趋势;贮藏30 d时,A处理果实可溶性固形物含量和固酸比最高（13.5%、31.24）,明显高于D处理（10.5%、27.26）;D处理果实失重最小,贮藏30 d失重5.19%,E处理果实失重率最高（11.82%）;A处理果实贮藏38 d时无腐烂果出现;C处理果实贮藏40褐变指数仅为2.5%。[结论]热激和壳聚糖处理可抑制白沙枇杷果实褐变和腐烂,使其保持青种果实的风味。[ Objective ] The aim was to provide the technical data for prolonging the market sales stage of white-sand loquat. [ Method ] Study the changes of soluble solids and titratable acid content, weight loss, brown stain etc in Green-variety-white-sand loquat fruits with different storage methods （ A ： heat treatment ＋ low temperature storage ; B ： 1.5% chitosan treatment ＋ low temperature storage ; C ： heat treatment ＋ 1.5% chitosan treatment ＋ low temperature storage ; D ： low temperature storage ; E ： normal temperature storage）. [ Result ] After stored for 1 - 5 d, the soluble solids contents in loquat fruits of different treatments were all increased, after that, it showed a decrease-increase-decrease trend. After stored for 30 d, the soluble solids content and tss-acid ratio in loquat fruits of A treatment were the highest（ 13.5% and 31.24）, which were obviously higher than that of D treatment（ 10.5 % and 27.26） ; Weight loss of loquat fruits of D treatment was the lowest, and its weight loss rate after stored for 30 d was 5.19%, the weight loss ratio of loquat fruits of E treatment was the lowest（ 11.82% ）. There were no decay loquat fruits appeared in A treatment after stored for 38 d storage. The browning index of loquat fruits of C treatment was only 2.5 % after stored for 40 d. [ Conclusion ] Heat shock and chitosan treatment could inhibit browning and decay of white-sand loquat fruits, and make them keep green-variety flavor.

关 键 词：白沙枇杷 热处理 壳聚糖 贮藏 

分 类 号：S609.3[农业科学—园艺学]