Table 4.

Inactivation factors of different bacteria in platelet concentrates after THERAFEX UV-Platelets treatment (N = 6)

Species	Aerobic/anaerobic	Gram stain	Spore former	Reduction factor (log)
Bacillus cereus	aerobic	+	+	4.3 ± 0.81
Clostridium perfringens	anaerobic	+	+	≥4.73
Escherichia coli	fac. anaerobic	−	−	≥4.01
Enterobacter cloacae	fac. anaerobic	−	−	≥4.29
Klebsiella pneumoniae	fac. anaerobic	−	−	4.8 ± 0.28
Pseudomonas aeruginosa	aerobic	−	−	≥4.92
Propionibacterium acnes	anaerobic	+	−	4.53 ± 1.13
Serratia marcescens	fac. anaerobic	−	−	≥4.99
Staphylococcus aureus	aerobic	+	−	≥4.78
Staphylococcus epidermidis	aerobic	+	−	4.83 ± 0.51

fac. = Facultative.