壳聚糖及UV-C处理对冬枣贮藏品质的影响  

Effects of Chitosan and Ultraviolet-C Treatments on Storage Quality of Winter Jujube

作　　者：王金丽[1] 林强[2] 李建杰[3] 冯春艳[3] 杨春燕[3] 荣瑞芬[3] 

机构地区：[1]青岛农业大学食品科学与工程学院,山东青岛266109 [2]北京联合大学生物化工学院,北京100023 [3]北京联合大学应用文理学院,北京100191

出　　处：《食品科学》2010年第22期462-466,共5页Food Science

基　　金：国家自然科学基金项目(30700645)

摘　　要：采用采前壳聚糖喷施、采后短波紫外线照射处理冬枣并低温贮藏,以提高冬枣抗病性,延长保鲜期。对冬枣果实着色、发病情况和品质特性进行分析研究。结果表明:0.5～1kJ/m2 UV-C照射、壳聚糖处理明显促进了果实的着色,降低了发病率和发病指数,推迟发病3～6d;0.5～1kJ/m2 UV-C处理可保持枣果较高的糖、酸和VC含量,品质提高,壳聚糖处理对枣果贮藏品质的影响不明显。In order to improve disease resistance and extend storage time, color development, incidence and quality property of winter jujube with pre-harvested chitosan treatment and post-harvested ultraviolet-C （UV-C） treatment were analyzed during storage. Results indicated that chitosan treatment and 0.5-1 kJ/m^2 UV-C irradiation could promote the color development, reduce the infection rate and disease index, and postpone disease incidence for 3 6 days. In addition, 0.5 1 kJ/m^2 UV-C treatment could retain the contents of total acids, total sugar and vitamin C, and improve the product quality. However, chitosan treatment had not significant effect on the quality of winter jujube.

关 键 词：壳聚糖 短波紫外线 冬枣 贮藏品质 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]