On the other hand, although ultrasound can usually kill or
remove some cells, a number of them may loosen but not fully
detach from the produce surface. A portion of these, may reattach
to the surface making more than a 1 cfu from a single source. This
might be the reason we observed a minute decrease in themicrobial reduction in combined treatment (SAEW þ US)
compared to SAEW treatment alone in a few of treatments (2 out of
16).