Table 2.

Pretreatment technologies

Process	Company	Characteristic
Steam explosion	Beta Renewables	Low xylose yield High enzyme loading
Single‐stage dilute acid	Abengoa	High xylose yield Moderate enzyme loading
Two‐stage dilute acid	Poet‐DSM	High xylose yield Low enzyme loading
Ammonia & Steam	Dupont	Require high enzyme loading

Each industrial player has developed its own pretreatment technology.