1. Introduction During the last fifteen years, the number of reported bioassays and biosensor-related approaches in food safety applications based on the use of mammalian cells has steadily increased [1,2,3,4,5]. In many of the published studies, human intestinal cell lines such as Caco-2 and HT-29, both derived from colon adenocarcinomas, have been used to assess the degree of attachment and invasion of key food pathogens, such as Salmonella sp., Bacillus sp., and Listeria sp. [6,7,8].
