TABLE 2.

Growth parameters of the G. oxydans N44-1 strains in fermentors with 15% dissolved oxygen and 50 g liter⁻¹ glucose^a

G. oxydans strain	Final OD600	CDW (g liter−1)	μb (h−1)	tdc (h)	Yx/s (g CDW g glucose−1)d
N44-1 pBBR1MCS4	9.0 ± 0.11	2.1 ± 0.05	0.18 ± 0.02	3.9	0.09 ± 0.005
N44-1 mgdH::kan pBBRMCS4	18.7 ± 0.19	4.4 ± 0.09	0.25 ± 0.05	2.8	0.13 ± 0.005
N44-1 ΔmgdH sgdH::kan pBBR1MCS4	24.4 ± 0.19	5.7 ± 0.07	0.32 ± 0.03	2.2	0.14 ± 0.002

^aCultivation was carried out in bioreactors (Dasgip, Jülich, Germany) under pH and aeration control (Fig. 2).

^bμ, growth rate.

^ct_d, doubling time.

^dFinal dry weight per liter divided by the substrate consumed: initial glucose (g liter⁻¹) − residual glucose (g liter⁻¹). Y_x/s, growth yield coefficient.