Enhanced enzymatic sugar production from corn stover by combination of water extraction and glycerol-assisted instant catapult steam explosion

Bioresources and Bioprocessing

Table 5 Glucan digestibility and glucose yield from enzymatic hydrolysate per 100 g corn stover with different conditions

Water extraction prior to ICSE	G:W¹	Digestibility, %		Glucose yield, g/100 g corn stover		Relative glucose yield increase (%)²
Water extraction prior to ICSE		Washed	Unwashed	Washed	Unwashed	Washed	Unwashed
No	0:5	68.5 ± 2.6	59.6 ± 3.0	17.8 ± 1.2³	18.0 ± 0.2	0.0	1.1 ± 1.1
	2:3	72.0 ± 6.4	69.5 ± 4.0	20.0 ± 1.6	22.2 ± 0.9	12.4 ± 9.0	24.7 ± 5.1
	3:2	73.1 ± 3.0	72.4 ± 0.6	20.3 ± 1.0	22.9 ± 0.4	14.0 ± 5.6	28.7 ± 2.2
	4:1	78.2 ± 2.0	78.1 ± 1.4	21.2 ± 0.6	23.7 ± 0.3	19.1 ± 3.4	33.1 ± 1.7
	5:0	76.3 ± 1.6	72.5 ± 0.8	21.1 ± 0.6	22.7 ± 0.3	18.5 ± 3.4	27.5 ± 1.7
Yes	0:5	71.2 ± 1.1	68.6 ± 1.0	20.3 ± 0.2	20.7 ± 0.3	14.0 ± 0.6	16.3 ± 1.7
Yes	4:1	86.6 ± 1.0	89.7 ± 2.5	23.6 ± 0.5	25.5 ± 0.6	32.6 ± 2.8	43.3 ± 3.4

1. G:W = glycerol:water (w/w); 2. relative glucose yield increase (%) = (glucose yield at each condition—glucose yield at reference condition) × 100/glucose yield at reference condition; 3. reference condition