Research Article

Bactericidal Effects of 405 nm Light Exposure Demonstrated by Inactivation of Escherichia, Salmonella, Shigella, Listeria, and Mycobacterium Species in Liquid Suspensions and on Exposed Surfaces

Figure 3

Qualitative representation of the bactericidal effect of high-intensity 405 nm light on (1) E. coli, (2) S. sonnei, (3) S. enterica, and (4) L. monocytogenes. Plates (a), (b), and (c) demonstrate the inactivating effect of 15, 30, and 45 minutes light exposure, respectively, on streaks of the foodborne pathogenic bacteria, with half of each plate being light exposed and the other half being kept in darkness to provide the equivalent non-light-exposed control.
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(a)
137805.fig.003b
(b)
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(c)