Metal‐polyphenol Multistage Competitive Coordination System for Colorimetric Monitoring Meat Freshness (Adv. Mater. 21/2025)

Metal-Polyphenol Meat Freshness Intelligent Monitoring Platform In article number 2503246, Yunfei Xie, Tiancong Zhao, and co-workers propose for the first time a multi-level competitive coordination chromogenic mechanism between metal, polyphenol, and amine. The metal-polyphenol network colorimetric sensor array (MPN-CSA) developed based on this has excellent stability, specificity, and economic environmental benefits. Combined with convolutional neural network technology, it can achieve sensitive, accurate, and real-time online intelligent monitoring of meat freshness.