Fig 9. The accumulation of Phe, cinnamic acid, p-coumaric acid, Pin and PDG during bioconversion in the resting cell system with leucine as the substrate.

The used condition is 13 mmol/L leucine in a and reaction time of 56 h (b). Signals indicate Phe (five-point star), cinnamic acid (downtriangle), p-coumaric acid (circle), Pin (uptriangle) and PDG (square).