バガスの酵素糖化のための化学的前処理その他のバイオマスへの応用-その3-

概要

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A series of chemical pretreatments for the enzymatic saccharification of eleven varieties of cellulosic biomass, including sugarcane bagasse, were tried.A semi-continuous process with a twin-screw extruder was used to obtain cellulase-sensitive cellulose by solubilizing lignin and hemi-cellulose in the biomass.The divided particles (2 mm diameter) of biomass were allowed to react batchwise with 5-22% solution of NaOH-Na_2S (solution : biomass=0.5-1.5 : 1.0) at room temperature for 30 min, and then continuously fed into the extruder in which the cylinder was maintained at 150-200℃. The screw rotation speed was fixed at 200 rpm through the reaction.The first group, corn stover, rice straw and eulalia gave over 50% saccharification rate, this figure is practically equivalent with that of bagasse.The second group, cardboard and newspaper, were treated and we obtained celluloses that have the saccharification rate ranging from 27% to 35%.The third group including lauan wood, rice hulls, cucumber tree, and pine wood were also treated similarly, but less than 21% saccharification was obtained. With beech wood, a fairly good figure (32%) was obtained, exceptionally.
社団法人日本生物工学会の論文
1985-05-25