Ethylbenzene (50 mmol l-1) was mixed with free rAaeUPO (0.1 nmol) in a total volume of 1 ml potassium phosphate buffer (100 mmol l-1, pH 7). Continuous flow of npMWPT-treated water at a flow rate of 2.5 ml min-1 was added over a time frame of 2 min, while the solution was mixed using an empty rotating bed reactor at 900 rpm. After 2 min, the flow of plasma-treated water was stopped. Samples (150 µl) were withdrawn for GC analysis directly after 2 min (‘after reaction’) and after further 10 min incubation (‘after incubation’) to allow conversion of residual H2O2. Means and standard deviations reflect three independent experiments.