食品科学 ›› 2007, Vol. 28 ›› Issue (7): 83-87.

• 基础研究 • 上一篇    下一篇

核磁共振技术(NMR)研究脐橙的储藏过程

 王娜, 林向阳, 阮榕生, 张锦胜, 陈卫江, 金志强   

  1. 南昌大学教育部食品科学重点实验室; 南昌大学教育部食品科学重点实验室 江西南昌330047; 江西南昌330047福州大学生物科学与工程学院; 福建福州350002; 江西南昌330047;
  • 出版日期:2007-07-15 发布日期:2011-10-24

Study on Navel Orange Storage Processing with NMR

 WANG  Na, LIN  Xiang-Yang, RUAN  Rong-Sheng, ZHANG  Jin-Sheng, CHEN  Wei-Jiang, JIN  Zhi-Qiang   

  1. 1.Key Laboratory of Food Science, Ministry of Education, Nanchang University, Nanchang 330047, China; 2.College of Biological Science and Technology, Fuzhou University, Fuzhou 350002, China
  • Online:2007-07-15 Published:2011-10-24

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。

关键词: 核磁共振技术, 自旋-自旋弛豫时间, 脐橙, 储藏过程

Abstract: 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.

Key words: NMR, spin-spin relaxation, navel orange, storage processing