Fig. 1 (abstract P-453).

(A) CHO cell growth over a cultivation time of 48 h. Triangles = viable cell density; squares = cell density; substrate/metabolite concentrations [mmol/L]: lime-green bars = glucose; green bars = L-glutamine; red bars = lactate; yellow bars = ammonium. (B) Two-dimensional representation of the VOCs in the analyzed off-gas phase. The x-axis indicates the ion mobility of the compounds and the y-axis the retention time. Areas with high intensity (red), low intensity (blue). The sample was taken from a CHO cell culture after 43 h of cultivation