Fig. 3.2. Inactivation kinetics of D. radiodurans R1 cells (a), A. niger DSM 1988 conidia (b),
B. pumilus endospores DSM 492 (c), and B. atrophaeus DSM 675 endospores (d) treated with
plasma in continuous mode ( ) or pulsed mode (pulse:pause ratio 10:90 ms; ). Organisms
were freeze‐dried on glass slide substrates before plasma treatment. All experiments were
performed on the DSA701 plasma system with the following parameters: microwave power
2 kW in continuous mode, 4 kW in pulse on phases; pressure 10 Pa; process gas mixture of
80% oxygen and 20% nitrogen; substrates placed at 1 cm distance to plasma source. Error bars
indicate ± one standard error of at least four replicates.