E-Mail IMAGE: Based on a reaction between yeast and the novel coronavirus, the test will rapidly detect the presence of SARS-CoV-2 in saliva and will be available by mid-2021 view more Credit: BIOinFOOD Incubated at the University of Campinas (UNICAMP) in the state of São Paulo, Brazil, and supported by São Paulo Research Foundation- FAPESP's Innovative Research in Small Business Program (PIPE), BIOinFOOD is a startup that is developing a rapid COVID-19 diagnostic test based on a patent application filed by students at UNICAMP's Genomics and Bioenergy Laboratory. The test is based on a biosensor consisting of a genetically modified brewer's yeast (Saccharomyces cerevisiae), which changes color if human ACE2 receptor expressed by the yeast's membrane binds to the spike glycoprotein present on the external surface of the virus.