TABLE 4

DiBAC4(3) accumulation of E. coli O157:H7 and L. monocytogenes cells suspended in PBS after treatment with continuous or pulsed (1,000 Hz/10% or 20 Hz/50%) UVC-LED irradiation

TreatmentDiBAC4(3) accumulation (%)a
E. coli O157:H7L. monocytogenes
Control100.00 ± 0.75 A100.00 ± 1.53 A
Continuous114.30 ± 1.47 B105.54 ± 1.06 B
1,000 Hz/10%123.02 ± 2.98 C115.29 ± 1.76 C
20 Hz/50%130.49 ± 2.61 D122.24 ± 2.44 D
  • a The non-UV-treated groups were designated the controls. Data represent means ± standard deviations from three replications. Values followed by the same uppercase letters within columns for each microorganism are not significantly different.