Table 3.

Parameters analyzed during anaerobic batch fermentation on different sugar mixtures.

		Yield
Carbon source	Strain	a Biomass g/g substrate	a Glycerol g/g substrate	b Xylitol g/g xylose	a Ethanol g/g substrate
Xylose	Control-PPP-XYL	0.040 ± 0.006	0.056 ± 0.017	0.29 ± 0.04	0.25 ± 0.06
	PGM2-PPP-XYL	0.076 ± 0.002	0.011 ± 0.000	0.15 ± 0.07	0.30 ± 0.06
Galactose + Xylose	Control-PPP-XYL	0.056 ± 0.007	0.061 ± 0.004	0.29 ± 0.05	0.31 ± 0.02
	PGM2-PPP-XYL	0.064 ± 0.004	0.042 ± 0.001	0.37 ± 0.04	0.32 ± 0.00
Galactose + Xylose + Glucose	Control-PPP-XYL	0.061 ± 0.002	0.138 ± 0.028	0.39 ± 0.04	0.32 ± 0.00
	PGM2-PPP-XYL	0.070 ± 0.001	0.115 ± 0.003	0.40 ± 0.03	0.32 ± 0.01

^aBiomass, glycerol and ethanol yields were calculated by plotting the consumed sugar/s (g l^-1) against the produced biomass (g biomass l^-1), the produced glycerol (g glycerol l^-1) or the produced ethanol (g ethanol l^-1) respectively on the phase of constant and highest values. ^bXylitol yields were calculated by plotting the consumed xylose (g xylose l^-1) against the produced xylitol (g xylitol l^-1) on the phase of constant and highest values.