3.3. Ultraviolet light
In the case of ultraviolet light, results are shown in Fig. 3. Firstly,carrots (Fig. 3a) did not show any inactivation even after 60 min of exposure to radiation. Working distance, related with the fluence,did not affect the cells. In the case of lettuce (Fig. 3b) an inactivation of approximately 1.7 log was achieved after 60 min of treatment.