smart packaging real-time detection
Combining a pH-sensitive dye with a persistent luminescent phosphor, this film enables wide-range, highly linear fluorescence detection of food freshness, readable with smartphone assistance.
Wang, Huihui · Liang, Zhang · Hao, Hongshun · Bi, Jingran
Food Chemistry 2024
Linear response with R² = 0.9993 over pH 2.0-12.0
Can estimate total volatile basic nitrogen (TVB-N) and total viable count (TVC)