Preparation of octyl beta-D-xylobioside and xyloside by xylanase-catalyzeddirect transglycosylation reaction of xylan and octanol

1-Octyl beta-D-xylobioside and xyloside were prepared by direct transglycos ylation reaction of xylan and 1-octanol using purified xylanase from Aureob asidium pullulans. 2-Ethylhexyl beta-D-xylobioside and xyloside were also p repared in the same way. The maximum yields of 2-ethylhexyl beta-D-xylobios ide and 2-ethylhexyl beta-D-xyloside were 110 and 54 mg/g xylan, respective ly. The proposed mechanism for production of octyl xylobioside and xyloside involved the reaction of xylan and octanol by xylanase to produce octyl xy lobioside and xylotrioside, the latter of which was simultaneously hydrolyz ed by xylanase into octyl xyloside and xylobiose.