Improvement of D-Ribose Production from Corn Starch Hydrolysate by a Transketolase-Deficient Strain Bacillus subtilis UJS0717

Table 3

Effect of corn steep liquor concentration on D-ribose production performance by B. subtilis UJS0717.

Corn steep liquor; concentration (g/L)	Initial glucose; (g/L)	Residual glucose; (g/L)	Glucose consumption; rate (%)	Glucose consumption; rate (g/L·h)	Cell concentration; (g/L)	D-Ribose; (g/L)	D-Ribose yield; (g/g)	D-Ribose productivity; (g/L·h)
5	152.0	28.00 ± 1.14	81.58 ± 0.93	1.72 ± 0.02	5.71 ± 0.11	28.89 ± 0.94	0.23 ± 0.01	0.40 ± 0.00
10	152.0	18.00 ± 0.14	88.16 ± 0.09	1.86 ± 0.00	7.41 ± 0.10	34.15 ± 1.54	0.25 ± 0.01	0.47 ± 0.00
15	152.0	6.40 ± 0.06	95.79 ± 0.04	2.02 ± 0.00	10.16 ± 0.16	48.25 ± 0.24	0.33 ± 0.00	0.67 ± 0.00
20	152.0	0.13 ± 0.04	99.91 ± 0.03	2.11 ± 0.00	10.71 ± 0.21	54.02 ± 0.89	0.36 ± 0.00	0.75 ± 0.00
25	152.0	0.18 ± 0.04	99.88 ± 0.03	2.11 ± 0.00	10.21 ± 0.09	48.84 ± 0.26	0.32 ± 0.00	0.68 ± 0.00

compared to corn steep liquor concentration of 5 g/L group.