| Agricultural product quality and safety form the foundation of constructing food supply systems. Smart hydrogels exhibit promising application prospects in agricultural quality and safety analysis due to their stimuli responsiveness, mechanical stability, biocompatibility, and adjustable pore size. This review focuses on the classification, preparation methods, responsive mechanisms, and applications of smart hydrogels in agricultural product safety. Based on synthesis methods, they can be divided into physically cross-linked and chemically cross-linked hydrogels, while stimulus-responsive types include temperature-responsive, pH-responsive, biomolecule-responsive, electric field-responsive, and magnetic field-responsive hydrogels. This study summarizes their applications in contaminants adsorption/separation, foodborne pathogen detection, mycotoxin detection, pesticide/veterinary drug residue analysis, illegal additive identification, and heavy metal detection for agricultural product quality assurance. Development prospects of smart hydrogels are further discussed to provide references for their expanded utilization in agriculture. |
