Fig. 5From: How chip size impacts steam pretreatment effectiveness for biological conversion of poplar wood into fermentable sugars T 2 images resulting from spin echo MRI measurements of Populus wood chips, both untreated and pretreated in a steam gun at 180 °C for 4 and 18 min followed by conditioning at 100 % RH for 14 days. Red the highest water local mobility. The z direction corresponds to the chip length and the x direction corresponds to chip thicknessBack to article page