Abstract
Global food safety problems emerge one after another, and people's requirements for quality of life are constantly improving. At this time, it is very important to put forward a method that can quickly and directly detect pathogenic bacteria. We hope that this project can strengthen people's attention to food safety and reduce the tragedies caused by food safety. We used phage receptor binding protein (RBP)-nanomagnetic bead complexes (RBP-MBs) combined with paper-based sensors to isolate and colorimetrically detect four types of foodborne pathogenic bacteria simultaneously. Compared with the existing detection technology, it is quicker, simpler and more efficient in identifying multiple foodborne pathogens at one time.