Stimulus-responsive hydrogels: A potent tool for biosensing in food safety

•Stimulus-responsive hydrogels offer a proven solution to food safety concerns.•Application of stimulus-responsive hydrogels in food safety biosensing.•Stimulus-responsive hydrogels play an important role in simplifying sample preparation, rapid detection, and real-time quality monitoring.•The current problems, challenges and the future development of stimulus-responsive hydrogels biosensor were summarized and prospected.