Table 1.

Physiological parameters for BP000 and BP10001 obtained from batch fermentations of a mixed glucose-xylose substrate (10 g/L each)

	Glucose phaseb		Xylose phased
	BP000	BP10001	BP000	BP10001
q [g/g CDW/h]a	3.0	2.9	0.05	0.05
Yethanol [g/g]	0.36	0.36	0.23	0.30
Yxylitol [g/g]	0.006	NDc	0.36	0.26
Yglycerol [g/g]	0.12	0.11	0.072	0.023
Yacetate [g/g]	0.009	0.010	0.028	0.044
C-recovery [%]	101	97	108	107

a) q_glucose and q_xylose were determined from data acquired in the first 6 h of the glucose phase and in the first 50 h of the xylose phase respectively. S.D.s on uptake rates were ≤ 12%;

b) Yield coefficients (g/g glucose and xylose consumed) were calculated using data obtained after a reaction time of 6 h. Except for Y_xylitol where calculation of S.D. was not applicable, S.D.s were ≤ 14%.

c) ND - not detectable

d) Yield coefficients (g/g xylose consumed) represent mean values for the initial 100 hours of the xylose utilization phase. S.D.s were ≤ 11%.