Polydiacetylene-based sensors for food applications

Polydiacetylene (PDA) sensors have been developed as food management tools due to their convenient colorimetric signal, low cost, versatility, and ability to be incorporated into food packaging materials and devices. In this review, we discuss methods of PDA sensor fabrication, their use as food quality and food contaminant sensors, and their incorporation into materials and devices. We highlight PDA quality monitoring sensors for meat, milk, fruits, and beverages, and contaminant detection systems for pathogens, antibiotics, pesticides, and heavy metals. We evaluate different PDA sensor formats for food applications including solution-based tests and substrate-based sensors, such as hydrogels and films. Finally, we discuss our perspective on the challenges and opportunities for PDA food sensors to provide inspiration and direction for future research.

Automated summary

Polydiacetylene (PDA) sensors are developed as food management tools due to their convenient colorimetric signal, low cost, versatility, and ability to be incorporated into food packaging materials and devices. This review discusses PDA sensor fabrication methods, their application as food quality and contaminant sensors, and their integration into materials and devices. Different PDA sensor formats for food applications, including solution-based tests and substrate-based sensors like hydrogels and films, are evaluated. The challenges and opportunities for future research in PDA food sensors are also discussed.