可食性涂膜对冷藏过程中上海蜜梨品质的影响  

Effects of edible coatings on quality of Shanghai sand pear(Pyrus pyrifolia)during cold storage

作　　者：周然[1] 闫丽萍[2] 谢晶[1] 李云飞[3] 方恒和[1] 

机构地区：[1]上海海洋大学食品学院,上海201306 [2]宜春学院高安校区经济管理系,江西330800 [3]上海交通大学农学院食品系,上海200240

出　　处：《上海农业学报》2010年第4期53-56,共4页Acta Agriculturae Shanghai

基　　金：上海海洋大学博士启动基金(B-8203-08-0291);上海市优秀青年教师科研专项基金(B8101-09-0025);"创新行动计划"部分地方院校计划项目(D-8004-08-0416);上海市教育委员会重点学科建设项目(J50704)资助

摘　　要：利用羧甲基壳聚糖涂膜和森帕尔保鲜涂膜处理上海蜜梨,4℃冷藏并定时检测梨品质。结果表明:与直接冷藏处理的对照组相比,涂膜处理降低了上海蜜梨的呼吸速率,减少了储藏过程中上海蜜梨的可溶固形物、可滴定酸、抗坏血酸、硬度和果肉相对电导率的变化。相对于市售的森帕尔涂膜,羧甲基壳聚糖涂膜对上海蜜梨的保鲜效果更好。Shanghai sand pears were treated with carboxymethyl chitosan and Semperfresh^（TM） fresh-keeping coatings and then stored at 4℃,and their quality changes were determined at regular intervals.The results showed that compared with direct cold storage at 4℃,the coating treatments depressed the respiratory rate of the pears and reduced the changes of the pears in terms of soluble solids,titratable acidity,ascorbic acid,firmness and relative specific conductance.The results also indicated that carboxymethyl chitosan coating was better in fresh-keeping effect than Semperfresh^（TM）coating.

关 键 词：上海蜜梨 品质 可食性涂膜 羧甲基壳聚糖 

分 类 号：S661.2[农业科学—果树学] TS255.3[农业科学—园艺学]