A PAPER-BASED ANALYTICAL DEVICE FOR THE COLORIMETRIC DETECTION OF FOODBORNE PATHOGENIC BACTERIA

摘要

We have developed a paper-based analytical device as a platform for colorimetric detection of pathogenic bacteria responsible for foodborne illness. The food industry currently relies on time-consuming and complex analysis techniques to determine the presence of live Escherichia coli, Listeria monocytogenes, and Salmonella enterica in food products. Advantages of the paper-based design include low cost, simple fabrication and operation, portability, and disposability. Additionally, colorimetric assays allow for simple, rapid analysis. Using this novel method, enrichment time is reduced to 6 hr or less, with limits of detection on the order of 10~4 cfu/mL (colony forming units).