Fig. 1From: Development of optimal steam explosion pretreatment and highly effective cell factory for bioconversion of grain vinegar residue to butanolFermentable sugars obtained in the water extraction after steam explosion pretreatment. a–c The correlationship between fermentable sugars in the water extraction and pretreatment severity of SE; d–f the fermentation sugars obtained under different operation conditions of SE (pressure and retention time); f–h the three phases of steam explosionBack to article page