纳米纤维素
小虾
橙色(颜色)
活性包装
食品包装
相对湿度
化学
食品科学
制浆造纸工业
材料科学
纤维素
生物
有机化学
渔业
工程类
热力学
物理
作者
Yue Feng,Lin Jiang,Xinjie Chen,Hua Chai,Linping Tian,Jiayi Zhang,Jiayi Zhang,Yushan Yang,Yingying Li
标识
DOI:10.1016/j.foodchem.2024.138885
摘要
Biobased multi-stimulation materials have received considerable attention for intelligent packaging and anti-counterfeiting applications. Cellulose nanocrystals (CNCs) and cyanidins are good material candidates for monitoring food freshness as they are eco-friendly natural substances. This work incorporated cyanidin with a CNC-hosting substrate to develop a simple, environment-friendly colorimetric device to visualize food freshness. Across the pH range of 2–13, the indicator exhibited noticeable color changes ranging from red to gray and eventually to orange. The CNC-cyanidin (CC) film exhibited a dramatic color change from blue to dark red and high sensitivity at a relative humidity of 30 %–100 %. In corresponding to the total volatile elemental nitrogen (TVB-N) level of shrimp, the indicator showed distinguishable colors at different stages of shrimp. The findings imply that the samples have substantial potential for use as an intelligent indicator for tracking shrimp freshness.
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