The synergistic action of accessory enzymes enhances the hydrolytic potential of a “cellulase mixture” but is highly substrate specific

Table 1 Steam pretreatment conditions and chemical composition of pretreated lignocellulosic substrates

Substrate	Pretreatment conditions	Composition of pretreated feedstocks						Abbreviation
Substrate	Pretreatment conditions	Ara	Gal	Glu	Xyl	Man	AIL	Abbreviation
Corn fiber	190°C, 5 min, 3% SO₂	6.9	2.8	38.2	15.3	2.2	12.6	SPCF
Sweet sorghum bagasse	190°C, 5 min, 3% SO₂	0.6	0.8	54.3	9.8	1.0	25.8	SPSB
Corn stover	190°C, 5 min, 3% SO₂	1.0	0.7	56.1	7.0	1.1	27.0	SPCS
Poplar	180°C, 5 min, 4% SO₂	0.3	0.8	59.8	6.6	1.3	30.4	SPP180
	200°C, 5 min, 4% SO₂	0.3	0.8	59.3	3.7	1.2	33.9	SPP200
Lodgepole pine	200°C, 5 min, 4% SO₂	bdl	bdl	46.4	bdl	bdl	45.0	SPLP

Ara Arabinan, Xyl Xylan, Glu Glucan, Gal Galactan, Man Mannan, AIL Acid Insoluble Lignin, bdl below detectable level.

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