Foodborne gastroenteritis outbreaks of Salmonella Typhimurium infections are often associated with leafy vegetables. In addition to biotic factors, attachment and adhesion to the vegetable leaves and subsequent survival and internalization in the tissues in the post-harvest stages are mediated by abiotic factors, mainly light, temperature and time. This study combined quantitative cultural methods and Scanning Electron Microscopy (SEM) to investigate the influence of light (dark = 0 μE m