A wound or roughened fruit surface shields and partially protects microorganisms during UV-C exposure (Syamaladevi et al., 2013).
However,we observed an interesting pattern with L. monocytogenes, with the largest E90 on strawberry surfaces.
This may be due to the higher resistance of Listeria spp. to UV-C treatment (Gabriel and Nakano, 2009; Guerrero-Beltrán and Barbosa-Cánovas,2005).