Listeria monocytogenes
Knobling et al. 2023 · 279 nm
Test conditions & context
Type Bacterium (vegetative)
Medium Surface
Test wavelength 279 nm
Particle size 1000 nm
Author Knobling et al.
Year 2023
Edelstahl-Coupon, PBS-Tröpfchen, UV-LED 279 nm — nichtlineare Inaktivierung, Weibull-Modell (delta=3.02 mJ/cm2, p=2.15, konvexe Shoulder-Kurve); log_2..log_4 aus dem publizierten Weibull-Fit abgeleitet. Schwellendosis vor messbarem Effekt typisch für Listeria.
UV-C dose–response (D-values)
A D-value is the UV-C dose (in mJ/cm²) needed for a given log-reduction. D90 = 90 % inactivation = 1-log; D99 = 99 % = 2-log; D99.9 = 99.9 % = 3-log, and so on. Values come from the cited study under its specific test conditions.
Reduction log Dose (mJ/cm²)
D90 90 % 1-log 3 mJ/cm²
D99 99 % 2-log 4.2 mJ/cm²
D99.9 99.9 % 3-log 5.1 mJ/cm²
D99.99 99.99 % 4-log 5.8 mJ/cm²
Primary source
Knobling et al. (2023). doi.org/10.3389/frfst.2023.1182765