“…In previous work, gamma radiation respectively yielded D 10 -values of 0.27 and 0.14 kGy for E. coli O157:H7 internalized in spinach and on the surface of lettuce (Niemira, 2007;Niemira, Sommers, & Fan, 2002). Similar E. coli O157:H7 inactivation values also have been reported using E-beam, with a D 10 -value of 0.20 kGy for baby spinach (Neal, Cabrera-Diaz, Marquez-Gonzalez, Maxim, & Castillo, 2008).…”