A growing toolkit from a team at Purdue University now includes a portable, paper-based biosensor designed to identify genetically modified (GM) corn and soybean. The biosensor technology has been disclosed to the Purdue Innovates Office of Technology Commercialization, which has filed for a patent. To prepare the extract, leaf tissue is homogenized, then diluted at a ratio of one part extract to seven parts water. We successfully developed our paper-based biosensor based on that particular trait.”The Purdue-Bayer Crop Science team discussed further possible applications. (2025) Development of a portable paper-based biosensor for the identification of genetically modified corn (Zea mays) and soybean (Glycine max).