Hence, the inactivation kinetics
of Salmonella Typhimurium STCC 878 as a flour contaminator, treated
on the vibrating plate, was not linear as Erdoğdu and Ekiz observed in
2011 in the microbial reduction for cumin seeds. That kinetics indicated
that microorganisms would either become more resistant to UV-C light
or be somehow protected against UV-C photons. Based on literature
data, the first possibility is less probable, since the inactivation kinetics
of Salmonella in liquid media displays a shoulder phenomenon generally
related to DNA repair mechanisms in cells, followed by an exponential
inactivation kinetics not observing tails (Gayán et al., 2012;
Quintero-Ramos et al., 2004). Therefore, the second hypothesis would
be responsible for that observed kinetics. This point would need more
research to evaluate this point in the case of powder products.