摘要
研究壳聚糖-甲氧基果胶复合涂膜及冷藏对葡萄的贮藏生理及保鲜效果的影响。将经/未经涂膜处理的葡萄分别在常温及冷藏(4℃)条件下贮藏30d。结果表明:冷藏未涂膜与常温涂膜的葡萄具有相近的贮藏品质。涂膜结合冷藏保鲜可有效抑制果实的呼吸强度,贮藏30d,葡萄的呼吸强度为7.1(CO2mg·kg-1·h-1),延迟了后熟时间;同时,涂膜结合冷藏处理使果实腐烂率降低到6.67%,有效维持了果实的VC含量,并提高了果实亮度,延缓了可溶性固形物含量的增加。此外,葡萄涂膜后玻璃态转化温度提高9.75℃,为实现葡萄的冻结保藏提供了有益的参考。
Chitosan-cothxy pectin coating and cold storage（4℃）were combined to keep fresh and physiological metabolism of grapes. Grapes were coated with/without complex chitosan coating and then stored at room temperature or 4℃ up to 30d for physicochemical quality evaluation.The results showed that complex chitosancothxy pectin coating at room temperature and cold storage without coating got the same effects on the physiological characteristics of kyoho grapes. Complex coating combined with cold storage could inhibite the respiration intensity to 7.1 （ CO2 mg.kg-1. h-1 ）, delay repening time, decrease fruit decay rate, maintain higher Vc content,increase the brightness and stabilize SSC content. Besides, the glass transition temperature of grapes coated with chitosan coating increased 9.75℃ which could benefit grape frozen preservation.
出处
《食品工业科技》
CAS
CSCD
北大核心
2014年第21期329-332,336,共5页
Science and Technology of Food Industry
基金
教育部留学回国人员科研启动基金
吉林省科技发展计划基金(201201128)
吉林省教育厅"十二五"科学技术研究项目
关键词
壳聚糖涂膜
冷藏
葡萄
生理品质
玻璃态转化温度
chitosan coating
cold storage
grape
physiological characteristics
glass transition temperature
