Traditionally, food quality is evaluated by consumers through comparison of the production and expiration dates of the product. However, product shelf life cannot be the real and only parameter of food quality, especially within a variety of storage environments. Therefore, new indicators of food quality are needed to provide food safety to the consumer. In this work, we reported a detection indicator based on rhodamine 6G‐adamantanamine and β‐cyclodextrin (β‐CD) polyelectrolyte cross‐linked onto a nonwoven polyethylene terephthalate textile support, which can be used as the indication of food quality by means of the irreversible change of fluorescence. The relationship between the increase of fluorescence and pH variation was also reported. Considering food safety, a migration experiment was carried out using a food simulation system. When pH changed to 6.8, the evident fluorescence can be observed by naked eye at 650‐nm excitation wavelength. β‐CD can not only act as a good carrier of rhodamine 6G‐adamantanamine but also enhanced the fluorescence to indicate whether rhodamine 6G‐adamantanamine was loaded onto β‐CD polyelectrolyte or nonwoven polyethylene terephthalate. After 250 h of migration experiment at 25°C, it was found that the fluorescent substances slightly migrated, and the migration under acidic conditions was almost negligible. The fluorescence enhancement performance and migratory behavior indicated that the material had the potential as a fluorescent intelligent indicator for food packaging.

中文翻译：

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基于罗丹明6G-金刚烷胺的无纺布聚对苯二甲酸乙二醇酯上样开关检测指示剂的制备，表征和形态

传统上，消费者通过比较产品的生产日期和有效期来评估食品质量。但是，产品保质期不是食品质量的真实且唯一的参数，尤其是在各种存储环境中。因此，需要新的食品质量指标来为消费者提供食品安全。在这项工作中，我们报告了一种基于罗丹明6G-金刚烷胺和β-环糊精（β-CD）聚电解质交联到非织造聚对苯二甲酸乙二醇酯纺织载体上的检测指示剂，该指示剂可通过以下方法用作食品质量指标：荧光的不可逆变化。还报道了荧光增加与pH变化之间的关系。考虑到食品安全性，使用食品模拟系统进行了迁移实验。当pH更改为6.8时，可以用肉眼在650 nm的激发波长处观察到明显的荧光。β-CD不仅可以作为罗丹明6G-金刚烷胺的良好载体，还可以增强荧光，从而表明罗丹明6G-金刚烷胺是被加载到β-CD聚电解质还是非织造聚对苯二甲酸乙二醇酯上。在25°C下进行250h迁移实验后，发现荧光物质略有迁移，而在酸性条件下的迁移几乎可以忽略不计。荧光增强性能和迁移行为表明该材料具有作为食品包装荧光智能指示剂的潜力。β-CD不仅可以作为罗丹明6G-金刚烷胺的良好载体，还可以增强荧光，从而表明罗丹明6G-金刚烷胺是被加载到β-CD聚电解质还是非织造聚对苯二甲酸乙二醇酯上。在25°C下进行250h迁移实验后，发现荧光物质略有迁移，而在酸性条件下的迁移几乎可以忽略不计。荧光增强性能和迁移行为表明该材料具有作为食品包装荧光智能指示剂的潜力。β-CD不仅可以作为罗丹明6G-金刚烷胺的良好载体，还可以增强荧光，从而表明罗丹明6G-金刚烷胺是被装载到β-CD聚电解质还是非织造聚对苯二甲酸乙二醇酯上。在25°C下进行250h迁移实验后，发现荧光物质略有迁移，而在酸性条件下的迁移几乎可以忽略不计。荧光增强性能和迁移行为表明该材料具有作为食品包装荧光智能指示剂的潜力。在酸性条件下的迁移几乎可以忽略不计。荧光增强性能和迁移行为表明该材料具有作为食品包装荧光智能指示剂的潜力。在酸性条件下的迁移几乎可以忽略不计。荧光增强性能和迁移行为表明该材料具有作为食品包装荧光智能指示剂的潜力。