Cellulosic ethanol production by consortia of Scheffersomyces stipitis and engineered Zymomonas mobilis

Table 2 Fermentation profiles in the corn stover hydrolysate

Corn stover hydrolysate concentration (g/L)^a	S. stipitis CICC1960:Z. mobilis FR2	Glucose consumed (g/L)^b	Xylose consumed (g/L)^b	Ethanol^b
Corn stover hydrolysate concentration (g/L)^a	S. stipitis CICC1960:Z. mobilis FR2	Glucose consumed (g/L)^b	Xylose consumed (g/L)^b	Titer (g/L)	Yield (g/g)	Productivity (g/L/h)
60	1:0	38.27 ± 0.53	8.64 ± 0.49	13.40 ± 0.75	0.29 ± 0.01	0.73 ± 0.04
	0:1	38.27 ± 0.53	13.50 ± 0.00	18.72 ± 0.46	0.36 ± 0.01	2.08 ± 0.05
	1:3	38.27 ± 0.53	13.50 ± 0.00	19.58 ± 0.32	0.38 ± 0.01	2.18 ± 0.04
90	1:0	57.30 ± 1.55	7.74 ± 0.25	18.45 ± 0.35	0.28 ± 0.01	0.53 ± 0.01
	0:1	57.30 ± 1.55	18.62 ± 0.15	26.96 ± 0.24	0.36 ± 0.00	1.99 ± 0.08
	1:3	57.30 ± 1.55	18.87 ± 0.04	27.38 ± 0.58	0.36 ± 0.01	2.01 ± 0.05
120	1:0	67.35 ± 1.52	4.88 ± 0.19	16.35 ± 2.06	0.23 ± 0.03	0.19 ± 0.02
	0:1	80.61 ± 4.72	12.56 ± 0.74	32.03 ± 1.14	0.34 ± 0.01	1.32 ± 0.03
	1:3	80.61 ± 4.72	12.69 ± 0.60	33.05 ± 0.79	0.35 ± 0.01	1.11 ± 0.02

Data are mean ± standard error from three replicates
^aThe corn stover hydrolysate concentration refers to the total concentrations of glucose and xylose in the hydrolysate before autoclave sterilization
^bAll data were calculated based on the real sugar concentrations