Table 1.

The effect of applying a dose of 108 J cm^–2 using three different power density/exposure time regimes on the 405 nm light inactivation of L. monocytogenes in suspension.

Power density (mW cm–2)	Exposure time (min)	Dose (J cm–2)	Log10 CFU mL–1 reduction
10	180	108	5.18* (SD ±0.2)
20	90	108	5.05* (SD ±0.0)
30	60	108	4.90* (SD ±0.4)

*Indicates where a light-exposed bacterial count was significantly different from the non-exposed control count (P ≤ 0.05 calculated at the 95% confidence interval).

SD: standard deviation of averaged results.