Fig. 5From: Conversion of xylan by recyclable spores of Bacillus subtilis displaying thermophilic enzymesRecycled reaction. a Activity of spore-bound enzymes after the first reaction (1) and after the second reaction with spores collected by centrifugation and re-incubated without (2) or with (3) the addition of fresh substrate. b Activity of free (grey bars) or spore-bound (white bars) enzymes after the first reaction (1) and after the second reaction with fresh substrate (2). In both panels, each reaction round was performed for 16 h at 65 °CBack to article page