Figure 3.

Measurements of product evolution, charge consumption, and dissolved oxygen during electrolysis in the bioreactor (see Table 1; 4.2 nmol of 5-exo-camphor/nmol of CYP101/min of entry). Total consumed charge was evaluated by integrating the current to 270 min. An initial 30-min Ar gas purge (by gas bubbling) reduced dissolved O₂ to less than 2% saturation. Electrolysis was initiated, and Ar purging continued for another 70 min; then, purging was stopped and an Ar gas blanket was maintained above the electrolyte for the remainder of the electrolysis period.