Production and extraction of sugars from switchgrass hydrolyzed in ionic liquids

Table 4 Partition of the sugars after phase separation

Run no.	[Glc]_IL(g/L)^a	[Glc]_NaOH(g/L)	Log P_glc	[Xyl]_IL(g/L)^a	[Xyl]_NaOH(g/L)	Log P_xyl	GY_NaOH(%)^b	XY_NaOH(%)^b
1	0.004	8.55 ± 0.65	3.33	ND	18.58 ± 1.50	-	22.64	80.33
2	0.002	2.31 ± 0.13	3.06	ND	7.47 ± 0.41	-	15.60	88.26
3	0.001	2.46 ± 0.11	3.39	0.002	3.62 ± 0.24	3.26	25.26	67.19
4	0.007	8.84 ± 0.13	3.10	0.003	5.71 ± 0.10	3.28	20.98	59.05
5	0.016	17.84 ± 0.27	3.05	0.005	8.24 ± 0.05	3.22	54.23	47.01
6	0.008	10.07 ± 0.17	3.10	0.005	8.10 ± 0.17	3.21	29.81	48.15
7	0.018	24.73 ± 1.39	3.14	0.006	7.00 ± 0.65	3.07	53.42	18.07
8	0.020	26.56 ± 0.28	3.12	0.040	15.20 ± 0.49	2.58	35.72	30.23
9	0.023	28.06 ± 0.26	3.09	0.041	26.91 ± 0.42	2.82	27.82	24.46
10	0.036	32.94 ± 2.86	2.96	0.057	30.86 ± 3.19	2.73	16.57	22.91

Note: [Glc]_IL or [Xyl]_IL is glucose or xylose concentration in the IL phase; [Glc]_NaOH or [Xyl]_NaOH is glucose or xylose concentration in NaOH phase; ND: not detected. ^a The standard deviation is within 20% of the measurement. The deviation is due to the low concentration of the sugars in IL phase and detection limit of the instrument. ^bGY_NaOH is the final glucose yield in NaOH phase (percentage of the glucose in original biomass); XY_NaOH is the final xylose yield in NaOH phase (percentage of the xylose in original biomass).

ISSN: 2731-3654