Supplementary Figure 7: Plasma-driven biocatalysis with capillary plasma jet using CYP152BSb and 640 ppm H2O in feed gas. ETBE was hydroxylated using plasma treatment of a reaction solution containing CYP152BSb immobilized on ReliZyme HA403 M. The reaction solution contained 5 ml potassium phosphate buffer (100 mmol l-1, pH 7) with 50 mmol l-1 ETBE and 20 mmol l-1 heptanoic acid (as decoy molecule). Plasma treatment was performed with a water concentration of 640 ppm in the feed gas. Every 5 min aliquots were withdrawn for product analysis by GC measurement. Means and standard deviations reflect three experiments.