Adsorption of β-glucosidases in two commercial preparations onto pretreated biomass and lignin

Table 1 Composition of pretreated biomasses

					Composition (% of dry matter)
Abbreviation	Biomass	Origin	Pretreatment method	Pretreatment conditions (time (min)/temperature (°C))	Glucan	Xylan	Arabinan	Mannan	Galactan	Lignin	Ash
PWS	Wheat straw	Denmark	Steam	14.8 / 195	51.0 ±0.4	4.1 ±0.2	0.0 ±0.0	-	-	33.0 ±0.3	5.1 ±0.1
PSB	Sugarcane bagasse	LA, USA	Steam	12.0 / 196	52.7 ±0.7	4.1 ±0.1	0.7 ±0.0	-	-	31.0 ±0.8	7.4 ±0.6
EFB	Empty fruit bunches	Malaysia	Steam	13.0 / 199	43.5 ±0.8	4.9 ±0.2	0.0 ±0.0	-	-	37.6 ±0.8	3.5 ±0.3
PCS	Corn stover	MN, USA	Steam	17.4/195	44.1 ±2.7	3.2 ±0.6	0.1 ±0.0	-	-	28.1 ±1.4	15.2 ±0.5
HWS	Wheat straw	Denmark	H₂SO₄ impregnation, steam	12.0/180	49.4 ± 0.9	4.5 ±0.2	1.0 ±0.2	-	-	33.3 ±0.6	5.4 ±0.2
SES	Spruce	Sweden	Steam explosion	5 to 7/210 to 215 + 2% to 3% SO₂	38.5 ±0.3	2.3 ±0.2	0.4 ±0.0	3.5 ± 0.2	0.5 ± 0.1	50.6 ±1.5	1.0 ±0.3
OWS1	Wheat straw	Denmark	Organosolv	60/200 + 1% H₂SO₄	63.5 ±0.6	8.3 ±0.1	0.1 ±0.0	-	-	13.1 ±0.3	4.8 ±0.1
OWS2	Wheat straw	Denmark	Organosolv	60/200 + 1% H₂SO₄	60.7 ±1.1	7.2 ±0.0	0.1 ±0.0	-	-	20.6 ±0.4	3.0 ±0.1

The composition (in % of dry matter) of the pretreated biomasses is measured according to the National Renewable Energy Laboratory procedure for structural carbohydrates and lignin in biomass. [47].

ISSN: 2731-3654