Assessing the molecular structure basis for biomass recalcitrance during dilute acid and hydrothermal pretreatments

Table 1 Residual hemicellulose content versus pretreatment condition for different substrates[57, 59]

Feedstock	Temperature (°C)	Residence time (min)	H₂SO₄(% w/w)	Residual hemicellulose (%)
Wheat straw	170	15	2.5	8
	160	15	2.5	20
	190	10	1.0	43
	180	2	0	93
	190	30	0	52
	200	20	0	35
Loblolly pine	150	60	0	90
	150	60	1.0	40

ISSN: 2731-3654