摘要
本实验采用低场核磁共振技术研究不同处理方法脐橙在储藏过程中水分的变化以及水分的迁移行为,同时结合理化分析,探讨脐橙储藏过程中磁共振参数与脐橙品质变化的相关性。实验结果发现,果蜡处理的脐橙在四种方法中具有最高的T2弛豫时间,2,4-D处理的变化较缓。从T2数据结合理化性质分析可得,空白清水处理的样品货价期最短,其它方法处理的脐橙有较长的货架期;大分子物质降解为小分子物质,果皮失去持水能力,自由水分的生成大于自由水分的消耗是脐橙腐败的主要影响因素。
In this experiment, with low-field NMR water content changes and moisture migration behavior of different ways of handling navel orange during storage were studied, and with combined analysis of physical and chemical method, the relationship of NMR parameters and the changes of navel orange quality were also studied. Experimental results showed that the navel orange with wax has the top T2 relaxation time and the changes of T2 are relatively slow with 2,4-D and carbendazol in four of handling methods. From T2 data and physical and chemical analysis, the blank sample of water has the shortest shelf life, and the navel oranges with other handling methods have longer shelf life. The Macromolecular material degradation to small molecules, the peel losing water-holding capacity and the free water consumption greater than formation of water are the main reasons of navel orange corruption.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2007年第7期83-87,共5页
Food Science
基金
长江学者和创新团队发展计划资助项目(IRT0540)
江西省主要学科技术带头人项目
福建省教育厅科研项目(JB06057)
江西省教育厅项目(Z03502)
