Fig. 5From: Development of optimal steam explosion pretreatment and highly effective cell factory for bioconversion of grain vinegar residue to butanolThe changes of cumulative hole area, hole area and pore diameter under different pretreatment severity. a The relationship cumulative hole distribution of VR under different pretreatment severity; b the correlationship between the cumulative hole area and pretreatment severity; c the hole area distribution; d the correlationship between pretreatment severity and hole area within different pore diameter intervalsBack to article page