Pilot-Scale Production of Peroxygenase from Agrocybe aegerita

High Resolution Image Download MS PowerPoint Slide The pilot-scale production of the peroxygenase from Agrocybe aegerita (r Aae UPO) is demonstrated. In a fed-batch fermentation of the recombinant Pichia pastoris, the enzyme was secreted into the culture medium to a final concentration of 0.29 g L –1 corresponding to 735 g of the peroxygenase in 2500 L of the fermentation broth after 6 days. Due to nonoptimized downstream processing, only 170 g of the enzyme has been isolated. The preparative usefulness of the so-obtained enzyme preparation has been demonstrated at a semipreparative scale (100 mL) as an example of the stereoselective hydroxylation of ethyl benzene. Using an adjusted H 2 O 2 feed rate, linear product formation was observed for 7 days, producing more than 5 g L –1 ( R )-1-phenyl ethanol. The biocatalyst performed more than 340.000 catalytic turnovers (942 g of the product per gram of r Aae UPO).