Fine-tuning of NADH oxidase decreases byproduct accumulation in respiration deficient xylose metabolic Saccharomyces cerevisiae

Table 2 Physiological parameters of recombinant S. cerevisiae strains from batch cultivations on glucose and xylose

Strain	μ_max(h^-1)^a	Consumed xylose in 72 h (g L^-1)	Sugar consumption rate (g L^-1 h^-1)^b		Yield on sugars (g g^-1)^c			Carbon balance
		Consumed xylose in 72 h (g L^-1)	Glucose	Xylose	Biomass	Ethanol	Glycerol
XICO	0.17	20.14	1.34	0.48	0.10	0.35	0.084	0.92
XIGN	0.19	18.81	1.33	0.46	0.12	0.38	0.021	0.97
XITN	0.16	4.50	0.73	0.14	0.10	0.29	0.003	0.90

Average values from independent duplicate cultivations. In all cases, the standard error is less than 3%.
^aMaximum specific growth rate (h^-1).
^bSpecific volumetric rate of glucose or xylose (g L^-1 h^-1).
^cBiomass, ethanol or glycerol yield on consumed sugars (g g^-1 sugar).

ISSN: 1472-6750