Intelligent colorimetric indicator film based on bacterial cellulose and pelargonidin dye to indicate the freshness of tilapia fillets
Intelligent colorimetric indicator film based on bacterial cellulose and pelargonidin dye to indicate the freshness of tilapia fillets
复制标题
基于细菌纤维素和天竺葵素染料的智能比色指示膜可指示罗非鱼片的新鲜度
DOI：
10.1016/j.fpsl.2021.100712
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发表时间：
2021-07-03
影响因子：
8
通讯作者：
Ji Zengtao
中科院分区：
文献类型：
--
作者：
Liu Huimin;Shi Ce;Ji Zengtao
以细菌纤维素（BC）和天竺葵素（Pg）为基料，研制罗非鱼片智能保鲜包装膜。在pH 3 ~ pH 10范围内，Pg溶液和Pg-BC膜的颜色由红色变为蓝色。Pg的引入降低了薄膜的透光率，提高了薄膜的力学性能。FTIR结果表明，BC和Pg形成了分子间相互作用。Pg-BC薄膜的衍射峰强度随存放时间的延长而减弱。扫描电镜观察发现，Pg-BC膜在贮存过程中，其横截面和表面均发生了破坏。Pg-BC膜在4 ℃和25 ℃下监测鱼片新鲜度时，颜色从红色到无色有很大的差异，这与鱼的TVB-N和感官评分的变化相一致。因此，Pg-BC膜可作为智能包装膜，用于监测和可视化鱼在储存过程中的新鲜度。
This work aimed to develop an intelligent packaging film based on bacterial cellulose (BC) and pelargonidin (Pg) for tilapia fillets freshness. The color of Pg solution and Pg-BC films changed from red to blue within pH3-pH10. The introduction of Pg reduced the light transmittance and improved the mechanical properties of the film. FTIR results showed that BC and Pg formed intermolecular interactions. The diffraction peak intensity of Pg-BC film decreased during storage. The cross section and surface of Pg-BC film were damaged during storage by SEM. The Pg-BC film had a great color difference from red to colorless when employed to monitor the freshness of fillets stored at 4 degrees C and 25 degrees C, which was consistent with the change of TVB-N and sensory scores of fish. Therefore, the Pg-BC film can be used as intelligent packaging film to monitor and visualize the freshness of fish during storage.