Technological watch

pH-sensitive (halochromic) smart packaging films based on natural food colorants for the monitoring of food quality and safety

BackgroundThe recent rise in awareness of safe food and changing consumer attitudes have brought many innovations in packaging technology. Consumers are increasingly demanding natural food colorants such as carotenoids, betaines, anthocyanins and chlorophylls rather than synthetic dyes for food applications. As a result, smart packaging based on natural colorants and biopolymers has been introduced as the latest technology in the food packaging field. Smart products not only protect food from environmental hazards, but also send real-time signals (colorimetric, chemical, or electrical) to consumers for changes in the packaging environment and food quality.

Publication date: 01/11/2020

Author: Mahmood Alizadeh-Sani, Esmail Mohammadian, Jong-Whan Rhim, Seid Mahdi Jafari

Trends in Food Science & Technology


This project has received funding from the Bio Based Industries Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 837761.