Activation of lignocellulosic biomass for higher sugar yields using aqueous ionic liquid at low severity process conditions

Table 1 Compositional analysis of pretreated switchgrass and the removal of the major components^a

Temp./time (°C/h)	Solid recovery	Composition of pretreated biomass			Removal of the major components^c
Temp./time (°C/h)	Solid recovery	Glucan (%)	Xylan (%)	Lignin (%)^b	Glucan (%)	Xylan (%)	Lignin (%)^b
/	/	31.9 ± 0.1	20.2 ± 0.1	20.7 ± 0.1	/	/	/
25/0.5	71.3 ± 0.5	43.8 ± 0.6	19.2 ± 0.1	16.1 ± 0.1	2.2	32.2	44.7
25/1	68.5 ± 0.5	45.5 ± 1.0	18.8 ± 0.4	16.3 ± 0.8	2.3	36.2	46.2
25/3	65.2 ± 0.4	47.7 ± 0.3	18.2 ± 0.1	13.0 ± 0.1	2.4	41.1	59.0
50/0.5	57.2 ± 0.5	54.4 ± 0.2	16.6 ± 0.2	13.8 ± 0.1	2.5	53.0	62.0
50/1	51.0 ± 0.3	59.5 ± 0.6	15.9 ± 0.3	12.4 ± 0.2	4.3	59.8	69.6
50/3	48.1 ± 0.4	62.0 ± 0.6	12.7 ± 0.1	10.5 ± 0.3	6.5	69.8	75.7

^aThe calculation is based on biomass dry weight
^b Acid-insoluble lignin
^c Removal of the major components is calculated based on the compositions of raw switchgrass

ISSN: 2731-3654